[INFO] cloning repository https://github.com/wiktor-k/sample-serial-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wiktor-k/sample-serial-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwiktor-k%2Fsample-serial-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwiktor-k%2Fsample-serial-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c231660e1c2a5936a6326b38189e04fab790c960
[INFO] checking wiktor-k/sample-serial-test against try#3ec2a775459d36c7d90654e47c56ff7bb0d542ab for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwiktor-k%2Fsample-serial-test" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wiktor-k/sample-serial-test on toolchain 3ec2a775459d36c7d90654e47c56ff7bb0d542ab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wiktor-k/sample-serial-test
[INFO] finished tweaking git repo https://github.com/wiktor-k/sample-serial-test
[INFO] tweaked toml for git repo https://github.com/wiktor-k/sample-serial-test written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/wiktor-k/sample-serial-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" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b43eb5cad07e7b3ba52f9d3bcfad97e28359e348c470b5ca7f1e2a49e5e8247
[INFO] running `Command { std: "docker" "start" "-a" "6b43eb5cad07e7b3ba52f9d3bcfad97e28359e348c470b5ca7f1e2a49e5e8247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b43eb5cad07e7b3ba52f9d3bcfad97e28359e348c470b5ca7f1e2a49e5e8247", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b43eb5cad07e7b3ba52f9d3bcfad97e28359e348c470b5ca7f1e2a49e5e8247", kill_on_drop: false }`
[INFO] [stdout] 6b43eb5cad07e7b3ba52f9d3bcfad97e28359e348c470b5ca7f1e2a49e5e8247
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df1d44abaac34cfba9dbec5dec631d78e6f7ece7b86eae992245e3d189f8153f
[INFO] running `Command { std: "docker" "start" "-a" "df1d44abaac34cfba9dbec5dec631d78e6f7ece7b86eae992245e3d189f8153f", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling rustversion v1.0.6
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking sample-serial-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]    Compiling serial_test_derive v0.6.0
[INFO] [stderr]     Checking serial_test v0.6.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.99s
[INFO] running `Command { std: "docker" "inspect" "df1d44abaac34cfba9dbec5dec631d78e6f7ece7b86eae992245e3d189f8153f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df1d44abaac34cfba9dbec5dec631d78e6f7ece7b86eae992245e3d189f8153f", kill_on_drop: false }`
[INFO] [stdout] df1d44abaac34cfba9dbec5dec631d78e6f7ece7b86eae992245e3d189f8153f