[INFO] cloning repository https://github.com/drizzlevanta/rust_concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/drizzlevanta/rust_concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrizzlevanta%2Frust_concurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrizzlevanta%2Frust_concurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 447aab0e26494a38ddb2e32d48e54672bcced816
[INFO] checking drizzlevanta/rust_concurrency against master#08cd08fbef8c6663b052d8d9e4930d5696cbb8a7 for 150662-leaf-spurious
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdrizzlevanta%2Frust_concurrency" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/drizzlevanta/rust_concurrency
[INFO] finished tweaking git repo https://github.com/drizzlevanta/rust_concurrency
[INFO] tweaked toml for git repo https://github.com/drizzlevanta/rust_concurrency written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/drizzlevanta/rust_concurrency on toolchain 08cd08fbef8c6663b052d8d9e4930d5696cbb8a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/drizzlevanta/rust_concurrency 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" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a7a9570ef39dc7063b6179ab2af57bbb38636261d78ceeb53f9999970d04bf4
[INFO] running `Command { std: "docker" "start" "-a" "1a7a9570ef39dc7063b6179ab2af57bbb38636261d78ceeb53f9999970d04bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a7a9570ef39dc7063b6179ab2af57bbb38636261d78ceeb53f9999970d04bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a7a9570ef39dc7063b6179ab2af57bbb38636261d78ceeb53f9999970d04bf4", kill_on_drop: false }`
[INFO] [stdout] 1a7a9570ef39dc7063b6179ab2af57bbb38636261d78ceeb53f9999970d04bf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+08cd08fbef8c6663b052d8d9e4930d5696cbb8a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd2a1ad5aba07bd06fe5c943b34e9ce3e48fea46965b1b9ac1a25ed2060a5a5e
[INFO] running `Command { std: "docker" "start" "-a" "cd2a1ad5aba07bd06fe5c943b34e9ce3e48fea46965b1b9ac1a25ed2060a5a5e", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "cd2a1ad5aba07bd06fe5c943b34e9ce3e48fea46965b1b9ac1a25ed2060a5a5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd2a1ad5aba07bd06fe5c943b34e9ce3e48fea46965b1b9ac1a25ed2060a5a5e", kill_on_drop: false }`
[INFO] [stdout] cd2a1ad5aba07bd06fe5c943b34e9ce3e48fea46965b1b9ac1a25ed2060a5a5e