[Pixel C Original Android Development] l3iggs:
here you go. To try to uncomplicate things, here's a log of me trying to connect to an unsecured wifi AP. no dice.

04-05 15:33:23.155 4003 5399 I WifiService: stopRestrictingAutoJoinToSubscriptionId uid=1000
04-05 15:33:23.157 4003 5399 I WifiService: connect uid=1000
04-05 15:33:23.157 3753 3816 D audioserver: logFgsApiBegin: FGS Logger Transaction failed, -129
04-05 15:33:23.158 4003 4133 E WifiConfigManager: Cannot find network with networkId -1 or configKey "open security"NONE or upgradable security type check
04-05 15:33:23.159 4003 4133 E WifiConfigManager: Cannot find network with networkId -1 or configKey "open security"NONE or upgradable security type check
04-05 15:33:23.161 4003 5381 E AppOps : Operation not found: uid=1041 pkg=audioserver(null) op=WAKE_LOCK
04-05 15:33:23.163 4003 4133 E WifiConfigManager: Cannot find network with configKey "open security"NONE
04-05 15:33:23.163 4003 4133 D WifiConfigurationUtil: Add upgradable OWE configuration.
04-05 15:33:23.164 4003 4133 I WifiConfigManager: Credential changed for netId=7
04-05 15:33:23.164 4003 4133 E WifiPermissionsUtil: isDeviceOwner: packageName is null, returning false
04-05 15:33:23.164 4003 4133 E WifiPermissionsUtil: isProfileOwner: packageName is null, returning false
04-05 15:33:23.164 4003 4133 D WifiConfigManager: Enable disabled network: "open security" num=0
04-05 15:33:23.620 0 0 I : pll_a_out0 = 24576000 Hz, aud_mclk = 24576000 Hz, codec rate = 48000Hz, channels= 2
04-05 15:33:23.176 4003 4133 D WifiConfigStore: Writing to stores completed in 8 ms.
04-05 15:33:23.177 4003 4133 W ContextImpl: Calling a method in the system process without a qualified user: android.app.ContextImpl.sendBroadcastMultiplePermissions:1254 android.content.Context.sendBroadcastWithMultiplePermissions:2525 com.android.server.wifi.WifiServiceImpl.broadcastWifiCredentialChanged:6396 com.android.server.wifi.WifiServiceImpl.lambda$connect$108:6451 com.android.server.wifi.WifiServiceImpl.$r8$lambda$BdXiUOrQSjdtVSMo4uf-rZVwetA:0
04-05 15:33:23.177 4003 4133 D WifiConfigManager: Enable disabled network: "open security" num=0
04-05 15:33:23.184 4003 4133 D WifiConfigStore: Writing to stores completed in 3 ms.
04-05 15:33:23.186 4003 4133 D WifiClientModeImpl[6696618:wlan0]: connectToUserSelectNetwork netId 7, uid 1000, package com.android.settings, forceReconnect = true, isUserSelected = true
04-05 15:33:23.188 4003 4133 D WifiScoreReport: setShouldReduceNetworkScore=false mNetworkAgent is null? true
04-05 15:33:23.188 4003 4133 D WifiClientModeImpl[6696618:wlan0]: CMD_START_CONNECT my state DisconnectedState nid=7 roam=false
04-05 15:33:23.192 4003 4133 I WifiClientModeImpl[6696618:wlan0]: Select best-fit security params: 0
04-05 15:33:23.193 3948 3948 W wificond: Scan is not started. Ignore abort request
04-05 15:33:23.193 4003 4133 D SupplicantStaIfaceHalAidlImpl: connectToNetwork "open security"NONE, actualSsid=null
04-05 15:33:23.194 9972 9972 I BpBinder: onLastStrongRef automatically unlinking death recipients: android.hardware.wifi.supplicant.ISupplicantStaNetworkCallback
04-05 15:33:23.194 4003 4133 D SupplicantStaIfaceHalAidlImpl: Selecting supplicant SSID "open security"
04-05 15:33:23.196 4003 4133 I SupplicantStaNetworkHalAidlImpl: Successfully set SSID
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: The target security params: Security Parameters:
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: Type: 0
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: Enabled: true
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: KeyMgmt: NONE
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: Protocols: WPA RSN
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: AuthAlgorithms:
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: PairwiseCiphers:
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: GroupCiphers:
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: GroupMgmtCiphers:
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: SuiteBCiphers:
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: RequirePmf: false
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: IsAddedByAutoUpgrade: false
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: IsSaeH2eOnlyMode: false
04-05 15:33:23.196 4003 4133 D SupplicantStaNetworkHalAidlImpl: IsSaePkOnlyMode: false
04-05 15:33:23.198 9972 9972 I wpa_supplicant: wlan0: Trying to associate with de:ad:be:ef:de:ad (SSID='open security' freq=5180 MHz)
04-05 15:33:23.198 9972 9972 I wpa_supplicant: assoc key_mgmt 0x4 network key_mgmt 0x4
04-05 15:33:23.199 4003 4133 D WifiCountryCode: evaluateAllCmmStateAndApplyIfAllReady: {ConcreteClientModeManager{id=6695555 iface=wlan0 role=ROLE_CLIENT_PRIMARY}=false}
04-05 15:33:23.199 4003 4133 D WifiClientModeImpl[6696618:wlan0]: Start Connecting Watchdog 38
04-05 15:33:23.201 4003 4133 W ContextImpl: Calling a method in the system process without a qualified user: android.app.ContextImpl.sendStickyBroadcast:1627 com.android.server.wifi.ClientModeImpl.sendNetworkChangeBroadcast:3052 com.android.server.wifi.ClientModeImpl.lambda$sendNetworkChangeBroadcastWithCurrentState$14:3029 com.android.server.wifi.ClientModeImpl.$r8$lambda$mtuS9ulugUkTxNA_sDDnAioo66w:0 com.android.server.wifi.ClientModeImpl$$ExternalSyntheticLambda13.send:0
04-05 15:33:23.203 4003 4133 I WifiClientModeImpl[6696618:wlan0]: Update current security type to 0
04-05 15:33:23.681 0 0 I [04-05 21:33:23.220] wl_cfg80211_connect: Connectting with de:ad:be:ef:de:ad channel (36) ssid "open security", len (13)
04-05 15:33:23.786 0 0 I wl_notify_connect_status:
04-05 15:33:23.790 0 0 W : connect failed event=0 e->status 1 e->reason 0
04-05 15:33:23.347 7010 7010 E PreferenceGroup: Found duplicated key: "StandardWifiEntry:{"SCAN_RESULT_KEY":"{\"SSID\":\"open security\",\"SECURITY_TYPES\":[0,6]}","IS_TARGETING_NEW_NETWORKS":true}". This can cause unintended behaviour, please use unique keys for every preference.
04-05 15:33:23.359 9972 9972 I wpa_supplicant: wlan0: CTRL-EVENT-ASSOC-REJECT bssid=de:ad:be:ef:de:ad status_code=37
04-05 15:33:23.362 4003 4862 D SupplicantStaIfaceCallbackAidlImpl: flush PMK cache due to association rejection for config id 7.
04-05 15:33:23.363 9972 9972 I wpa_supplicant: assoc key_mgmt 0x4 network key_mgmt 0x4
04-05 15:33:23.363 4003 4133 D WifiClientModeImpl[6696618:wlan0]: L2ConnectingState: Association rejection ssid: "open security" bssid: de:ad:be:ef:de:ad statusCode: 37 timedOut: false oceRssiBasedAssocRejectInfo: null mboAssocDisallowedInfo: null
04-05 15:33:23.819 0 0 I wl_bss_connect_done:
04-05 15:33:23.823 0 0 W : Report connect result - connection failed
04-05 15:33:23.380 3746 4277 D WifiHAL : Start get packet fate command
04-05 15:33:23.381 3746 4277 D WifiHAL : createRequest Get Tx packet fate request
04-05 15:33:23.381 3746 4277 D WifiHAL : error code -95 mapped to -3
04-05 15:33:23.381 3746 4277 E WifiHAL : Failed to register get pkt fate response; result = -3
04-05 15:33:23.381 4003 4133 E WifiStaIfaceAidlImpl: getDebugTxPacketFates failed with service-specific exception: android.os.ServiceSpecificException: (code 4)
04-05 15:33:23.381 3746 4277 D WifiHAL : Start get packet fate command
04-05 15:33:23.381 3746 4277 D WifiHAL : createRequest Get Rx packet fate request
04-05 15:33:23.381 3746 4277 D WifiHAL : error code -95 mapped to -3
04-05 15:33:23.381 3746 4277 E WifiHAL : Failed to register get pkt fate response; result = -3
04-05 15:33:23.382 4003 4133 E WifiStaIfaceAidlImpl: getDebugRxPacketFates failed with service-specific exception: android.os.ServiceSpecificException: (code 4)
04-05 15:33:23.382 4003 4133 D WifiLastResortWatchdog: updateFailureCountForNetwork: Unable to find Network ["open security", de:ad:be:ef:de:ad]
04-05 15:33:23.383 4003 4133 E WifiStaIfaceAidlImpl: stopRssiMonitoring failed with service-specific exception: android.os.ServiceSpecificException: (code 5)
04-05 15:33:23.384 4003 4133 W ContextImpl: Calling a method in the system process without a qualified user: android.app.ContextImpl.sendStickyBroadcast:1627 com.android.server.wifi.ClientModeImpl.sendNetworkChangeBroadcast:3052 com.android.server.wifi.ClientModeImpl.lambda$sendNetworkChangeBroadcastWithCurrentState$14:3029 com.android.server.wifi.ClientModeImpl.$r8$lambda$mtuS9ulugUkTxNA_sDDnAioo66w:0 com.android.server.wifi.ClientModeImpl$$ExternalSyntheticLambda13.send:0
04-05 15:33:23.395 4003 4133 D WifiCountryCode: evaluateAllCmmStateAndApplyIfAllReady: {ConcreteClientModeManager{id=6695555 iface=wlan0 role=ROLE_CLIENT_PRIMARY}=true}
04-05 15:33:23.396 4003 4133 D WifiCountryCode: Reading country code from telephony
04-05 15:33:23.397 4003 4133 D WifiCountryCode: Set telephony country code to:
04-05 15:33:23.397 4003 4133 D WifiCountryCode: updateCountryCode to null
04-05 15:33:23.398 4003 4133 I WifiClientModeImpl[6696618:wlan0]: disconnectedstate enter
04-05 15:33:23.399 4003 4133 E WifiScoringParams: Invalid frequency(-1), using 5G as default rssi array
04-05 15:33:23.399 4003 4133 E SupplicantStateTracker[wlan0]: Ignoring { when=-37ms what=147499 obj= ssid: "open security" bssid: de:ad:be:ef:de:ad statusCode: 37 timedOut: false oceRssiBasedAssocRejectInfo: null mboAssocDisallowedInfo: null target=com.android.wifi.x.com.android.internal.util.StateMachine$SmHandler }
04-05 15:33:23.853 0 0 I logd : logdr: UID=1000 GID=1000 PID=16857 n tail=127 logMask=19 pid=0 start=0ns deadline=0ns
04-05 15:33:23.409 3753 3983 D audioserver: logFgsApiEnd: FGS Logger Transaction failed, -129
04-05 15:33:23.410 3753 3968 I APM::AudioPolicyEngine: getDevicesForStrategyInt no device found for strategy 9
04-05 15:33:23.954 0 0 I logd : logdr: UID=1000 GID=1000 PID=16860 n tail=127 logMask=80 pid=0 start=0ns deadline=0ns
04-05 15:33:23.888 4822 5905 I NearbyDiscovery: (REDACTED) FastPairHandler: Received action %s
04-05 15:33:24.890 4003 5622 W ProcessStats: Tracking association SourceState{aa7469a com.google.android.apps.wellbeing/10127 BTop #13435} whose proc state 2 is better than process ProcessState{613829f com.google.android.gms.persistent/10126 pkg=com.google.android.gms} proc state 4 (7 skipped)

wpa_supplicant: wlan0: CTRL-EVENT-ASSOC-REJECT bssid=de:ad:be:ef:de:ad status_code=37

^that's really jumping out at me^ not sure what it might be...

I had some very old version of Lineage OS (can't remember the version, 15 maybe?) on this thing prior to flashing your version 21 here. Using that old version, I was able to connect to this same network.