[INFO] cloning repository https://github.com/quigley-c/huffman
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quigley-c/huffman" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquigley-c%2Fhuffman", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquigley-c%2Fhuffman'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39ac08154aedcdd12f3f8f39320283f7212538a1
[INFO] checking quigley-c/huffman against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquigley-c%2Fhuffman" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/quigley-c/huffman
[INFO] finished tweaking git repo https://github.com/quigley-c/huffman
[INFO] tweaked toml for git repo https://github.com/quigley-c/huffman written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/quigley-c/huffman on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/quigley-c/huffman already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0312a5809a78a94a0cf88d7ee3b9094477ca96e732d03c9a3e5802b3fa453e00
[INFO] running `Command { std: "docker" "start" "-a" "0312a5809a78a94a0cf88d7ee3b9094477ca96e732d03c9a3e5802b3fa453e00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0312a5809a78a94a0cf88d7ee3b9094477ca96e732d03c9a3e5802b3fa453e00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0312a5809a78a94a0cf88d7ee3b9094477ca96e732d03c9a3e5802b3fa453e00", kill_on_drop: false }`
[INFO] [stdout] 0312a5809a78a94a0cf88d7ee3b9094477ca96e732d03c9a3e5802b3fa453e00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c412118e54b0cf5061c778af7491c74675fc8d6ef563f03964d3db2c883b55d
[INFO] running `Command { std: "docker" "start" "-a" "0c412118e54b0cf5061c778af7491c74675fc8d6ef563f03964d3db2c883b55d", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.8
[INFO] [stderr]     Checking regex v1.11.0
[INFO] [stderr]     Checking huffman v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `to` and `val` are never read
[INFO] [stdout]   --> src/binary_heap.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Edge {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 9  |     pub from: usize,
[INFO] [stdout] 10 |     pub to: usize,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 11 |     pub val: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Edge` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `to` and `val` are never read
[INFO] [stdout]   --> src/binary_heap.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub struct Edge {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] 9  |     pub from: usize,
[INFO] [stdout] 10 |     pub to: usize,
[INFO] [stdout]    |         ^^
[INFO] [stdout] 11 |     pub val: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Edge` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.11s
[INFO] running `Command { std: "docker" "inspect" "0c412118e54b0cf5061c778af7491c74675fc8d6ef563f03964d3db2c883b55d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c412118e54b0cf5061c778af7491c74675fc8d6ef563f03964d3db2c883b55d", kill_on_drop: false }`
[INFO] [stdout] 0c412118e54b0cf5061c778af7491c74675fc8d6ef563f03964d3db2c883b55d
