[INFO] cloning repository https://github.com/aucker/concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aucker/concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faucker%2Fconcurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faucker%2Fconcurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c7736867c3fa5d765f54e4d938260a4f742fa1d
[INFO] testing aucker/concurrency against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faucker%2Fconcurrency" "/workspace/builds/worker-90/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-90/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aucker/concurrency on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aucker/concurrency
[INFO] finished tweaking git repo https://github.com/aucker/concurrency
[INFO] tweaked toml for git repo https://github.com/aucker/concurrency written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] crate git repo https://github.com/aucker/concurrency already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 845ad644f19bcb11f6a6f222c5d1d8b695f29af17d916385d4eb45a9027b3677
[INFO] running `Command { std: "docker" "start" "-a" "845ad644f19bcb11f6a6f222c5d1d8b695f29af17d916385d4eb45a9027b3677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "845ad644f19bcb11f6a6f222c5d1d8b695f29af17d916385d4eb45a9027b3677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "845ad644f19bcb11f6a6f222c5d1d8b695f29af17d916385d4eb45a9027b3677", kill_on_drop: false }`
[INFO] [stdout] 845ad644f19bcb11f6a6f222c5d1d8b695f29af17d916385d4eb45a9027b3677
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d6a33b1fdcf80202e6f0f0a89750615d940fac5a3a04fe2ec776e5605ad440e
[INFO] running `Command { std: "docker" "start" "-a" "6d6a33b1fdcf80202e6f0f0a89750615d940fac5a3a04fe2ec776e5605ad440e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.60s
[INFO] running `Command { std: "docker" "inspect" "6d6a33b1fdcf80202e6f0f0a89750615d940fac5a3a04fe2ec776e5605ad440e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d6a33b1fdcf80202e6f0f0a89750615d940fac5a3a04fe2ec776e5605ad440e", kill_on_drop: false }`
[INFO] [stdout] 6d6a33b1fdcf80202e6f0f0a89750615d940fac5a3a04fe2ec776e5605ad440e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 656e21e2695331ddb18eed7de1a0611ce49e50cb93fdf74cf06069d9d1071681
[INFO] running `Command { std: "docker" "start" "-a" "656e21e2695331ddb18eed7de1a0611ce49e50cb93fdf74cf06069d9d1071681", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "656e21e2695331ddb18eed7de1a0611ce49e50cb93fdf74cf06069d9d1071681", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "656e21e2695331ddb18eed7de1a0611ce49e50cb93fdf74cf06069d9d1071681", kill_on_drop: false }`
[INFO] [stdout] 656e21e2695331ddb18eed7de1a0611ce49e50cb93fdf74cf06069d9d1071681
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 472f7e349023c196bb2e992ef499d1105a7a25940ae0f9a4f9f865564f8e40e8
[INFO] running `Command { std: "docker" "start" "-a" "472f7e349023c196bb2e992ef499d1105a7a25940ae0f9a4f9f865564f8e40e8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.89s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/concurrency-cd9d2a4a7ca0f18d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "472f7e349023c196bb2e992ef499d1105a7a25940ae0f9a4f9f865564f8e40e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "472f7e349023c196bb2e992ef499d1105a7a25940ae0f9a4f9f865564f8e40e8", kill_on_drop: false }`
[INFO] [stdout] 472f7e349023c196bb2e992ef499d1105a7a25940ae0f9a4f9f865564f8e40e8