[INFO] cloning repository https://github.com/JosephTLyons/serial_number_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JosephTLyons/serial_number_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephTLyons%2Fserial_number_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephTLyons%2Fserial_number_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3933f21a3234f3f1fe8e302f4f9853438ec82625
[INFO] checking JosephTLyons/serial_number_generator against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJosephTLyons%2Fserial_number_generator" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JosephTLyons/serial_number_generator on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JosephTLyons/serial_number_generator
[INFO] finished tweaking git repo https://github.com/JosephTLyons/serial_number_generator
[INFO] tweaked toml for git repo https://github.com/JosephTLyons/serial_number_generator written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/JosephTLyons/serial_number_generator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34e8fbb44df73b32e65ea9c3e42e361ca7908517dad966b8d0d8fc5ded678e18
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "34e8fbb44df73b32e65ea9c3e42e361ca7908517dad966b8d0d8fc5ded678e18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34e8fbb44df73b32e65ea9c3e42e361ca7908517dad966b8d0d8fc5ded678e18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34e8fbb44df73b32e65ea9c3e42e361ca7908517dad966b8d0d8fc5ded678e18", kill_on_drop: false }`
[INFO] [stdout] 34e8fbb44df73b32e65ea9c3e42e361ca7908517dad966b8d0d8fc5ded678e18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 29daebf69956d2241cf541619448830b507b626cad9d1de50af478e0469e36a2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "29daebf69956d2241cf541619448830b507b626cad9d1de50af478e0469e36a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]     Checking text_io v0.1.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking andromeda v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.63s
[INFO] running `Command { std: "docker" "inspect" "29daebf69956d2241cf541619448830b507b626cad9d1de50af478e0469e36a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29daebf69956d2241cf541619448830b507b626cad9d1de50af478e0469e36a2", kill_on_drop: false }`
[INFO] [stdout] 29daebf69956d2241cf541619448830b507b626cad9d1de50af478e0469e36a2