[INFO] cloning repository https://github.com/gauteh/brack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gauteh/brack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgauteh%2Fbrack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgauteh%2Fbrack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9bf2af915b4b10830a92bdfc3057d8dc7572829
[INFO] testing gauteh/brack against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgauteh%2Fbrack" "/workspace/builds/worker-22/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-22/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gauteh/brack on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gauteh/brack
[INFO] finished tweaking git repo https://github.com/gauteh/brack
[INFO] tweaked toml for git repo https://github.com/gauteh/brack written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] crate git repo https://github.com/gauteh/brack already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab49c93b9ca2744e4bffe6d2a7261555568ed8a19c20702a1c9557ec5693175c
[INFO] running `Command { std: "docker" "start" "-a" "ab49c93b9ca2744e4bffe6d2a7261555568ed8a19c20702a1c9557ec5693175c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab49c93b9ca2744e4bffe6d2a7261555568ed8a19c20702a1c9557ec5693175c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab49c93b9ca2744e4bffe6d2a7261555568ed8a19c20702a1c9557ec5693175c", kill_on_drop: false }`
[INFO] [stdout] ab49c93b9ca2744e4bffe6d2a7261555568ed8a19c20702a1c9557ec5693175c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77b21c3356e59028c9b85d902e479eeb1feed78a98251cef50b9269c97d15c18
[INFO] running `Command { std: "docker" "start" "-a" "77b21c3356e59028c9b85d902e479eeb1feed78a98251cef50b9269c97d15c18", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling anyhow v1.0.41
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling brack v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(assert_matches)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `brack` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "77b21c3356e59028c9b85d902e479eeb1feed78a98251cef50b9269c97d15c18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b21c3356e59028c9b85d902e479eeb1feed78a98251cef50b9269c97d15c18", kill_on_drop: false }`
[INFO] [stdout] 77b21c3356e59028c9b85d902e479eeb1feed78a98251cef50b9269c97d15c18