[INFO] cloning repository https://github.com/m104ngc4594/02-concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/m104ngc4594/02-concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm104ngc4594%2F02-concurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm104ngc4594%2F02-concurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01f0f26bf992f8a4a4f86c32c2487a3e654be9cc
[INFO] checking m104ngc4594/02-concurrency against master#23718020b12d7e5a54f82a19910e8356ee719667 for pr-146013-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fm104ngc4594%2F02-concurrency" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/m104ngc4594/02-concurrency
[INFO] finished tweaking git repo https://github.com/m104ngc4594/02-concurrency
[INFO] tweaked toml for git repo https://github.com/m104ngc4594/02-concurrency written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/m104ngc4594/02-concurrency on toolchain 23718020b12d7e5a54f82a19910e8356ee719667
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/m104ngc4594/02-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" "+23718020b12d7e5a54f82a19910e8356ee719667" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded generator v0.7.5
[INFO] [stderr]   Downloaded oneshot v0.1.6
[INFO] [stderr]   Downloaded rustversion v1.0.16
[INFO] [stderr]   Downloaded anyhow v1.0.83
[INFO] [stderr]   Downloaded loom v0.5.6
[INFO] [stderr]   Downloaded proc-macro2 v1.0.82
[INFO] [stderr]   Downloaded cc v1.0.97
[INFO] [stderr]   Downloaded syn v2.0.61
[INFO] [stderr]   Downloaded regex v1.10.4
[INFO] [stderr]   Downloaded regex-syntax v0.8.3
[INFO] [stderr]   Downloaded regex-automata v0.4.6
[INFO] [stderr]   Downloaded libc v0.2.154
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa22fdd4d3c995127e41c043eb5dd13c91236b267b5e30a80a0ca6f84cabb3fc
[INFO] running `Command { std: "docker" "start" "-a" "aa22fdd4d3c995127e41c043eb5dd13c91236b267b5e30a80a0ca6f84cabb3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa22fdd4d3c995127e41c043eb5dd13c91236b267b5e30a80a0ca6f84cabb3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa22fdd4d3c995127e41c043eb5dd13c91236b267b5e30a80a0ca6f84cabb3fc", kill_on_drop: false }`
[INFO] [stdout] aa22fdd4d3c995127e41c043eb5dd13c91236b267b5e30a80a0ca6f84cabb3fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+23718020b12d7e5a54f82a19910e8356ee719667" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 682c2528ae304832e20e91b8b7fa665653cc62064398c5f2f66080eedb6bcb4c
[INFO] running `Command { std: "docker" "start" "-a" "682c2528ae304832e20e91b8b7fa665653cc62064398c5f2f66080eedb6bcb4c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling anyhow v1.0.83
[INFO] [stderr]     Checking oneshot v0.1.6
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "682c2528ae304832e20e91b8b7fa665653cc62064398c5f2f66080eedb6bcb4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "682c2528ae304832e20e91b8b7fa665653cc62064398c5f2f66080eedb6bcb4c", kill_on_drop: false }`
[INFO] [stdout] 682c2528ae304832e20e91b8b7fa665653cc62064398c5f2f66080eedb6bcb4c