[INFO] cloning repository https://github.com/vslynko/chapter20
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vslynko/chapter20" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvslynko%2Fchapter20", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvslynko%2Fchapter20'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d0a7c47d816c6890bae037ad58011f9fc68ba7fb
[INFO] checking vslynko/chapter20 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvslynko%2Fchapter20" "/workspace/builds/worker-52/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-52/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vslynko/chapter20 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/vslynko/chapter20
[INFO] finished tweaking git repo https://github.com/vslynko/chapter20
[INFO] tweaked toml for git repo https://github.com/vslynko/chapter20 written to /workspace/builds/worker-52/source/Cargo.toml
[INFO] crate git repo https://github.com/vslynko/chapter20 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df29a031d23cf1a984ebe41a1f0f67cac537ff6b6fdcdb23f7aa014005d0ea7b
[INFO] running `Command { std: "docker" "start" "-a" "df29a031d23cf1a984ebe41a1f0f67cac537ff6b6fdcdb23f7aa014005d0ea7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df29a031d23cf1a984ebe41a1f0f67cac537ff6b6fdcdb23f7aa014005d0ea7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df29a031d23cf1a984ebe41a1f0f67cac537ff6b6fdcdb23f7aa014005d0ea7b", kill_on_drop: false }`
[INFO] [stdout] df29a031d23cf1a984ebe41a1f0f67cac537ff6b6fdcdb23f7aa014005d0ea7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-52/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 801b62da9b27538a30738222a7e45dd3b0680aead11716ac60edda3764586960
[INFO] running `Command { std: "docker" "start" "-a" "801b62da9b27538a30738222a7e45dd3b0680aead11716ac60edda3764586960", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking chapter20 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "801b62da9b27538a30738222a7e45dd3b0680aead11716ac60edda3764586960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "801b62da9b27538a30738222a7e45dd3b0680aead11716ac60edda3764586960", kill_on_drop: false }`
[INFO] [stdout] 801b62da9b27538a30738222a7e45dd3b0680aead11716ac60edda3764586960