[INFO] cloning repository https://github.com/sounakofficial/rust-prac
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sounakofficial/rust-prac" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsounakofficial%2Frust-prac", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsounakofficial%2Frust-prac'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cea523ce70a77eed9584ad8a35a460d2077cacac
[INFO] checking sounakofficial/rust-prac against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsounakofficial%2Frust-prac" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sounakofficial/rust-prac on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sounakofficial/rust-prac
[INFO] finished tweaking git repo https://github.com/sounakofficial/rust-prac
[INFO] tweaked toml for git repo https://github.com/sounakofficial/rust-prac written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/sounakofficial/rust-prac already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4813c0657d07b5e42c2f0a42308ee699e9d6f11eefa057b676fd3550602d2d3f
[INFO] running `Command { std: "docker" "start" "-a" "4813c0657d07b5e42c2f0a42308ee699e9d6f11eefa057b676fd3550602d2d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4813c0657d07b5e42c2f0a42308ee699e9d6f11eefa057b676fd3550602d2d3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4813c0657d07b5e42c2f0a42308ee699e9d6f11eefa057b676fd3550602d2d3f", kill_on_drop: false }`
[INFO] [stdout] 4813c0657d07b5e42c2f0a42308ee699e9d6f11eefa057b676fd3550602d2d3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e98afb07e8471e8d8f9b0cc47f1b280bc321620efcdc8b79f93efe20eecba7cd
[INFO] running `Command { std: "docker" "start" "-a" "e98afb07e8471e8d8f9b0cc47f1b280bc321620efcdc8b79f93efe20eecba7cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.12s
[INFO] running `Command { std: "docker" "inspect" "e98afb07e8471e8d8f9b0cc47f1b280bc321620efcdc8b79f93efe20eecba7cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e98afb07e8471e8d8f9b0cc47f1b280bc321620efcdc8b79f93efe20eecba7cd", kill_on_drop: false }`
[INFO] [stdout] e98afb07e8471e8d8f9b0cc47f1b280bc321620efcdc8b79f93efe20eecba7cd