[INFO] cloning repository https://github.com/masonwr/huffman-encoding
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/masonwr/huffman-encoding" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasonwr%2Fhuffman-encoding", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasonwr%2Fhuffman-encoding'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 555996b70f5fffa7eedefd5591935367efcc74c3
[INFO] checking masonwr/huffman-encoding against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasonwr%2Fhuffman-encoding" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/masonwr/huffman-encoding on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/masonwr/huffman-encoding
[INFO] finished tweaking git repo https://github.com/masonwr/huffman-encoding
[INFO] tweaked toml for git repo https://github.com/masonwr/huffman-encoding written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/masonwr/huffman-encoding already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f055f0d5533e1efcaa272c5816d9f7a3746c0a8ae5b7c0fe9735d44c91db5ce1
[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" "f055f0d5533e1efcaa272c5816d9f7a3746c0a8ae5b7c0fe9735d44c91db5ce1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f055f0d5533e1efcaa272c5816d9f7a3746c0a8ae5b7c0fe9735d44c91db5ce1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f055f0d5533e1efcaa272c5816d9f7a3746c0a8ae5b7c0fe9735d44c91db5ce1", kill_on_drop: false }`
[INFO] [stdout] f055f0d5533e1efcaa272c5816d9f7a3746c0a8ae5b7c0fe9735d44c91db5ce1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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] d7cfd704633bce4dbe6e69b41593a72f802c8a840f1a32ee5a7f8641bcee650d
[INFO] running `Command { std: "docker" "start" "-a" "d7cfd704633bce4dbe6e69b41593a72f802c8a840f1a32ee5a7f8641bcee650d", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking huffman v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.99s
[INFO] running `Command { std: "docker" "inspect" "d7cfd704633bce4dbe6e69b41593a72f802c8a840f1a32ee5a7f8641bcee650d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7cfd704633bce4dbe6e69b41593a72f802c8a840f1a32ee5a7f8641bcee650d", kill_on_drop: false }`
[INFO] [stdout] d7cfd704633bce4dbe6e69b41593a72f802c8a840f1a32ee5a7f8641bcee650d