[INFO] cloning repository https://github.com/syntacticsugarglider/rustc-bug-mcve
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/syntacticsugarglider/rustc-bug-mcve" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsyntacticsugarglider%2Frustc-bug-mcve", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsyntacticsugarglider%2Frustc-bug-mcve'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a54922dc06e4948d12acfe3a58c6491ead9da9b8
[INFO] testing syntacticsugarglider/rustc-bug-mcve against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsyntacticsugarglider%2Frustc-bug-mcve" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/syntacticsugarglider/rustc-bug-mcve on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/syntacticsugarglider/rustc-bug-mcve
[INFO] finished tweaking git repo https://github.com/syntacticsugarglider/rustc-bug-mcve
[INFO] tweaked toml for git repo https://github.com/syntacticsugarglider/rustc-bug-mcve written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/syntacticsugarglider/rustc-bug-mcve already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da254044893c1e8719a551a8850d954ad26ae75eac7ec69f9dc01575ea62ec10
[INFO] running `Command { std: "docker" "start" "-a" "da254044893c1e8719a551a8850d954ad26ae75eac7ec69f9dc01575ea62ec10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da254044893c1e8719a551a8850d954ad26ae75eac7ec69f9dc01575ea62ec10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da254044893c1e8719a551a8850d954ad26ae75eac7ec69f9dc01575ea62ec10", kill_on_drop: false }`
[INFO] [stdout] da254044893c1e8719a551a8850d954ad26ae75eac7ec69f9dc01575ea62ec10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fc605669329571dbf27f62a8f4d874e2bfad9c9130184013aebb5910d2ddafc
[INFO] running `Command { std: "docker" "start" "-a" "0fc605669329571dbf27f62a8f4d874e2bfad9c9130184013aebb5910d2ddafc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mcve v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `mcve`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name mcve --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=a8aaf19c871c120f -C extra-filename=-a8aaf19c871c120f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "0fc605669329571dbf27f62a8f4d874e2bfad9c9130184013aebb5910d2ddafc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fc605669329571dbf27f62a8f4d874e2bfad9c9130184013aebb5910d2ddafc", kill_on_drop: false }`
[INFO] [stdout] 0fc605669329571dbf27f62a8f4d874e2bfad9c9130184013aebb5910d2ddafc
