[INFO] cloning repository https://github.com/phozzy/mergesort
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/phozzy/mergesort" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphozzy%2Fmergesort", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphozzy%2Fmergesort'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 253c0a9b325458ffa24d3525ae7486bb8d31db31
[INFO] checking phozzy/mergesort against try#d990716b6a1fdde1300748828a9c9e79dfd0b898 for pr-74846
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fphozzy%2Fmergesort" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/phozzy/mergesort on toolchain d990716b6a1fdde1300748828a9c9e79dfd0b898
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/phozzy/mergesort
[INFO] finished tweaking git repo https://github.com/phozzy/mergesort
[INFO] tweaked toml for git repo https://github.com/phozzy/mergesort written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/phozzy/mergesort already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9ad15083aa81e0f87a76d4562d66ed3c52415a342d7cb854805846e4a6d5431
[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" "b9ad15083aa81e0f87a76d4562d66ed3c52415a342d7cb854805846e4a6d5431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9ad15083aa81e0f87a76d4562d66ed3c52415a342d7cb854805846e4a6d5431", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9ad15083aa81e0f87a76d4562d66ed3c52415a342d7cb854805846e4a6d5431", kill_on_drop: false }`
[INFO] [stdout] b9ad15083aa81e0f87a76d4562d66ed3c52415a342d7cb854805846e4a6d5431
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+d990716b6a1fdde1300748828a9c9e79dfd0b898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf7ac0f4e61962136fd323c2f4d81c29d6fb680ce44fd5e2b6d0aea22922129b
[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" "bf7ac0f4e61962136fd323c2f4d81c29d6fb680ce44fd5e2b6d0aea22922129b", kill_on_drop: false }`
[INFO] [stderr]     Checking mergesort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "bf7ac0f4e61962136fd323c2f4d81c29d6fb680ce44fd5e2b6d0aea22922129b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf7ac0f4e61962136fd323c2f4d81c29d6fb680ce44fd5e2b6d0aea22922129b", kill_on_drop: false }`
[INFO] [stdout] bf7ac0f4e61962136fd323c2f4d81c29d6fb680ce44fd5e2b6d0aea22922129b