[INFO] cloning repository https://github.com/izflare/Huffman-coding
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/izflare/Huffman-coding" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fizflare%2FHuffman-coding", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fizflare%2FHuffman-coding'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58bcc5fe8f93ad42b8482d75d78ff2eef1789696
[INFO] checking izflare/Huffman-coding against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fizflare%2FHuffman-coding" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/izflare/Huffman-coding on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/izflare/Huffman-coding
[INFO] finished tweaking git repo https://github.com/izflare/Huffman-coding
[INFO] tweaked toml for git repo https://github.com/izflare/Huffman-coding written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/izflare/Huffman-coding already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5232c64258996bf2a3fb21599bf6ec40db2723d1218ac4677c2b28c21cb12c2a
[INFO] running `Command { std: "docker" "start" "-a" "5232c64258996bf2a3fb21599bf6ec40db2723d1218ac4677c2b28c21cb12c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5232c64258996bf2a3fb21599bf6ec40db2723d1218ac4677c2b28c21cb12c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5232c64258996bf2a3fb21599bf6ec40db2723d1218ac4677c2b28c21cb12c2a", kill_on_drop: false }`
[INFO] [stdout] 5232c64258996bf2a3fb21599bf6ec40db2723d1218ac4677c2b28c21cb12c2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d38dd542f36a97304c16ec068606ca77c22911ea8569ed2787bb9a05343f528
[INFO] running `Command { std: "docker" "start" "-a" "0d38dd542f36a97304c16ec068606ca77c22911ea8569ed2787bb9a05343f528", kill_on_drop: false }`
[INFO] [stderr]     Checking bit-vec v0.5.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking hc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.12s
[INFO] running `Command { std: "docker" "inspect" "0d38dd542f36a97304c16ec068606ca77c22911ea8569ed2787bb9a05343f528", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d38dd542f36a97304c16ec068606ca77c22911ea8569ed2787bb9a05343f528", kill_on_drop: false }`
[INFO] [stdout] 0d38dd542f36a97304c16ec068606ca77c22911ea8569ed2787bb9a05343f528