[INFO] cloning repository https://github.com/nt591/understanding_computation_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nt591/understanding_computation_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnt591%2Funderstanding_computation_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnt591%2Funderstanding_computation_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0975c8c1c337353055228aa1bc6a160c47dc8c33
[INFO] checking nt591/understanding_computation_rust against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnt591%2Funderstanding_computation_rust" "/workspace/builds/worker-25/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-25/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nt591/understanding_computation_rust on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nt591/understanding_computation_rust
[INFO] finished tweaking git repo https://github.com/nt591/understanding_computation_rust
[INFO] tweaked toml for git repo https://github.com/nt591/understanding_computation_rust written to /workspace/builds/worker-25/source/Cargo.toml
[INFO] crate git repo https://github.com/nt591/understanding_computation_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88b30759b00b36e9e91d5a296b6a24f1794e1f8c8d0121f1002763ad4e57b679
[INFO] running `Command { std: "docker" "start" "-a" "88b30759b00b36e9e91d5a296b6a24f1794e1f8c8d0121f1002763ad4e57b679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88b30759b00b36e9e91d5a296b6a24f1794e1f8c8d0121f1002763ad4e57b679", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88b30759b00b36e9e91d5a296b6a24f1794e1f8c8d0121f1002763ad4e57b679", kill_on_drop: false }`
[INFO] [stdout] 88b30759b00b36e9e91d5a296b6a24f1794e1f8c8d0121f1002763ad4e57b679
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-25/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56ab573842218faab402ab07af62f1d2a82ba8074c992a084825646bf6682a7b
[INFO] running `Command { std: "docker" "start" "-a" "56ab573842218faab402ab07af62f1d2a82ba8074c992a084825646bf6682a7b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking understanding_computation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.49s
[INFO] running `Command { std: "docker" "inspect" "56ab573842218faab402ab07af62f1d2a82ba8074c992a084825646bf6682a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56ab573842218faab402ab07af62f1d2a82ba8074c992a084825646bf6682a7b", kill_on_drop: false }`
[INFO] [stdout] 56ab573842218faab402ab07af62f1d2a82ba8074c992a084825646bf6682a7b