[INFO] cloning repository https://github.com/lostb1t/flicker_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lostb1t/flicker_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flostb1t%2Fflicker_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flostb1t%2Fflicker_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c9f1a0bc693194676384d5c4827debf103fd0881
[INFO] testing lostb1t/flicker_test against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flostb1t%2Fflicker_test" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/lostb1t/flicker_test
[INFO] finished tweaking git repo https://github.com/lostb1t/flicker_test
[INFO] tweaked toml for git repo https://github.com/lostb1t/flicker_test written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/lostb1t/flicker_test on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/lostb1t/flicker_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5531bc66a1c7e8a6f251fd8ff76f0fe1365eaf29ee1b333cffd22a303767fd0b
[INFO] running `Command { std: "docker" "start" "-a" "5531bc66a1c7e8a6f251fd8ff76f0fe1365eaf29ee1b333cffd22a303767fd0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5531bc66a1c7e8a6f251fd8ff76f0fe1365eaf29ee1b333cffd22a303767fd0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5531bc66a1c7e8a6f251fd8ff76f0fe1365eaf29ee1b333cffd22a303767fd0b", kill_on_drop: false }`
[INFO] [stdout] 5531bc66a1c7e8a6f251fd8ff76f0fe1365eaf29ee1b333cffd22a303767fd0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64833201adbf2b20ccc37468e5359de86eaa0e7c19534022883677e2fd19f31c
[INFO] running `Command { std: "docker" "start" "-a" "64833201adbf2b20ccc37468e5359de86eaa0e7c19534022883677e2fd19f31c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling esp-metadata-generated v0.1.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling cfg-if v1.0.1
[INFO] [stderr]    Compiling typenum v1.18.0
[INFO] [stderr]    Compiling critical-section v1.2.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling hashbrown v0.15.5
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling subtle v2.6.1
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.11
[INFO] [stderr]    Compiling hash32 v0.3.1
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling embedded-io-async v0.6.1
[INFO] [stderr]    Compiling evalexpr v12.0.2
[INFO] [stderr]    Compiling embedded-io v0.6.1
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling portable-atomic v1.11.1
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling litrs v0.4.2
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal-async v1.0.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling embassy-time-driver v0.2.0
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling esp-rom-sys v0.1.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling embassy-sync v0.6.2
[INFO] [stderr]    Compiling document-features v0.2.11
[INFO] [stderr]    Compiling embedded-hal v1.0.0
[INFO] [stderr]    Compiling embassy-hal-internal v0.3.0
[INFO] [stderr]    Compiling embassy-sync v0.7.0
[INFO] [stderr]    Compiling embedded-storage v0.3.1
[INFO] [stderr]    Compiling object v0.36.7
[INFO] [stderr]    Compiling winnow v0.7.12
[INFO] [stderr]    Compiling embedded-storage-async v0.4.1
[INFO] [stderr]    Compiling esp-synopsys-usb-otg v0.4.2
[INFO] [stderr]    Compiling embassy-time v0.4.0
[INFO] [stderr]    Compiling esp-config v0.5.0
[INFO] [stderr]    Compiling cpufeatures v0.2.17
[INFO] [stderr]    Compiling memchr v2.7.5
[INFO] [stderr]    Compiling const-oid v0.9.6
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling esp32s3 v0.33.0
[INFO] [stderr]    Compiling instability v0.3.9
[INFO] [stderr]    Compiling embassy-futures v0.1.1
[INFO] [stderr]    Compiling der v0.7.10
[INFO] [stderr]    Compiling usb-device v0.3.2
[INFO] [stderr]    Compiling embassy-embedded-hal v0.4.0
[INFO] [stderr]    Compiling hmac v0.12.1
[INFO] [stderr]    Compiling inout v0.1.4
[INFO] [stderr]    Compiling ff v0.13.1
[INFO] [stderr]    Compiling embassy-usb-driver v0.1.1
[INFO] [stderr]    Compiling anyhow v1.0.98
[INFO] [stderr]    Compiling ral-registers v0.1.3
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]    Compiling base16ct v0.2.0
[INFO] [stderr]    Compiling esp-println v0.15.0
[INFO] [stderr]    Compiling embassy-embedded-hal v0.3.2
[INFO] [stderr]    Compiling sec1 v0.7.3
[INFO] [stderr]    Compiling fugit v0.3.7
[INFO] [stderr]    Compiling embassy-usb-synopsys-otg v0.2.0
[INFO] [stderr]    Compiling group v0.13.0
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling hkdf v0.12.4
[INFO] [stderr]    Compiling universal-hash v0.5.1
[INFO] [stderr]    Compiling crypto-bigint v0.5.5
[INFO] [stderr]    Compiling embedded-can v0.4.1
[INFO] [stderr]    Compiling bytemuck v1.23.2
[INFO] [stderr]    Compiling ufmt-write v0.1.0
[INFO] [stderr]    Compiling bitflags v2.9.1
[INFO] [stderr]    Compiling opaque-debug v0.3.1
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling polyval v0.6.2
[INFO] [stderr]    Compiling zerocopy v0.8.26
[INFO] [stderr]    Compiling generic-array v0.12.4
[INFO] [stderr]    Compiling generic-array v0.13.3
[INFO] [stderr]    Compiling smoltcp v0.12.0
[INFO] [stderr]    Compiling embassy-time-queue-utils v0.1.0
[INFO] [stderr]    Compiling heapless v0.6.1
[INFO] [stderr]    Compiling xtensa-lx-rt v0.20.0
[INFO] [stderr]    Compiling atomic-polyfill v1.0.3
[INFO] [stderr]    Compiling darling_core v0.20.11
[INFO] [stderr]    Compiling embassy-executor v0.7.0
[INFO] [stderr]    Compiling elliptic-curve v0.13.8
[INFO] [stderr]    Compiling as-slice v0.1.5
[INFO] [stderr]    Compiling esp-wifi-sys v0.7.1
[INFO] [stderr]    Compiling primeorder v0.13.6
[INFO] [stderr]    Compiling embedded-graphics-core v0.4.0
[INFO] [stderr]    Compiling ghash v0.5.1
[INFO] [stderr]    Compiling aes v0.8.4
[INFO] [stderr]    Compiling ctr v0.9.2
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling aead v0.5.2
[INFO] [stderr]    Compiling embedded-nal v0.9.0
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling micromath v2.1.0
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling jiff v0.2.15
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling strum_macros v0.27.2
[INFO] [stderr]    Compiling bitfield-macros v0.19.1
[INFO] [stderr]    Compiling delegate v0.13.4
[INFO] [stderr]    Compiling bitfield v0.19.1
[INFO] [stderr]    Compiling managed v0.8.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling xtensa-lx-rt-proc-macros v0.4.0
[INFO] [stderr]    Compiling darling_macro v0.20.11
[INFO] [stderr]    Compiling portable_atomic_enum_macros v0.2.1
[INFO] [stderr]    Compiling darling v0.20.11
[INFO] [stderr]    Compiling enumset_derive v0.12.0
[INFO] [stderr]    Compiling embassy-executor-macros v0.6.2
[INFO] [stderr]    Compiling embedded-graphics v0.8.1
[INFO] [stderr]    Compiling enumset v1.1.7
[INFO] [stderr]    Compiling strum v0.27.2
[INFO] [stderr]    Compiling embedded-nal-async v0.8.0
[INFO] [stderr]    Compiling aes-gcm v0.10.3
[INFO] [stderr]    Compiling p256 v0.13.2
[INFO] [stderr]    Compiling sha2 v0.10.9
[INFO] [stderr]    Compiling embedded-dma v0.2.0
[INFO] [stderr]    Compiling xtensa-lx v0.12.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/xtensa-lx-0.12.0/src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(asm_experimental_arch)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xtensa-lx` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "64833201adbf2b20ccc37468e5359de86eaa0e7c19534022883677e2fd19f31c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64833201adbf2b20ccc37468e5359de86eaa0e7c19534022883677e2fd19f31c", kill_on_drop: false }`
[INFO] [stdout] 64833201adbf2b20ccc37468e5359de86eaa0e7c19534022883677e2fd19f31c
