[INFO] cloning repository https://github.com/m1el/beaver_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/m1el/beaver_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm1el%2Fbeaver_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm1el%2Fbeaver_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e41cdf66e562aa52f44115d8009f7e0c192d33ad
[INFO] testing m1el/beaver_solver against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm1el%2Fbeaver_solver" "/workspace/builds/worker-104/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-104/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/m1el/beaver_solver on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/m1el/beaver_solver
[INFO] finished tweaking git repo https://github.com/m1el/beaver_solver
[INFO] tweaked toml for git repo https://github.com/m1el/beaver_solver written to /workspace/builds/worker-104/source/Cargo.toml
[INFO] crate git repo https://github.com/m1el/beaver_solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68f3115e48c4b2358dea8c2a5ba121c423be1edacdb27d1e226cc0cf1a611d40
[INFO] running `Command { std: "docker" "start" "-a" "68f3115e48c4b2358dea8c2a5ba121c423be1edacdb27d1e226cc0cf1a611d40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68f3115e48c4b2358dea8c2a5ba121c423be1edacdb27d1e226cc0cf1a611d40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f3115e48c4b2358dea8c2a5ba121c423be1edacdb27d1e226cc0cf1a611d40", kill_on_drop: false }`
[INFO] [stdout] 68f3115e48c4b2358dea8c2a5ba121c423be1edacdb27d1e226cc0cf1a611d40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-104/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f0da0d0e5d60ef9f62574eff9151b617a740077a368662e708fd361cd495ad9
[INFO] running `Command { std: "docker" "start" "-a" "7f0da0d0e5d60ef9f62574eff9151b617a740077a368662e708fd361cd495ad9", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi v0.3.9
[INFO] [stderr]    Compiling core_simd v0.1.0 (https://github.com/rust-lang/stdsimd#715f9ac4)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/stdsimd-26e23068d55c82a1/715f9ac/crates/core_simd/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(repr_simd, platform_intrinsics, simd_ffi, const_generics)]
[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 `core_simd` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "7f0da0d0e5d60ef9f62574eff9151b617a740077a368662e708fd361cd495ad9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f0da0d0e5d60ef9f62574eff9151b617a740077a368662e708fd361cd495ad9", kill_on_drop: false }`
[INFO] [stdout] 7f0da0d0e5d60ef9f62574eff9151b617a740077a368662e708fd361cd495ad9