[INFO] cloning repository https://github.com/elsuizo/huffman-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/elsuizo/huffman-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felsuizo%2Fhuffman-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felsuizo%2Fhuffman-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5aa3641d74fdfcc03460e36400a9ac647383c3c8
[INFO] testing elsuizo/huffman-rs against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Felsuizo%2Fhuffman-rs" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/elsuizo/huffman-rs on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/elsuizo/huffman-rs
[INFO] finished tweaking git repo https://github.com/elsuizo/huffman-rs
[INFO] tweaked toml for git repo https://github.com/elsuizo/huffman-rs written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/elsuizo/huffman-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 263d792c4cedc3ac6b66cac45795541c83f015023560038fcc098dbb944796dd
[INFO] running `Command { std: "docker" "start" "-a" "263d792c4cedc3ac6b66cac45795541c83f015023560038fcc098dbb944796dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "263d792c4cedc3ac6b66cac45795541c83f015023560038fcc098dbb944796dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "263d792c4cedc3ac6b66cac45795541c83f015023560038fcc098dbb944796dd", kill_on_drop: false }`
[INFO] [stdout] 263d792c4cedc3ac6b66cac45795541c83f015023560038fcc098dbb944796dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57e3f80dde37868312272a16c784cfd256e86ec27f089709f53838f3838a36a5
[INFO] running `Command { std: "docker" "start" "-a" "57e3f80dde37868312272a16c784cfd256e86ec27f089709f53838f3838a36a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling huffman-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `probs` is never read
[INFO] [stdout]   --> src/main.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut probs: HashMap<char, u32> = HashMap::new();
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "57e3f80dde37868312272a16c784cfd256e86ec27f089709f53838f3838a36a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57e3f80dde37868312272a16c784cfd256e86ec27f089709f53838f3838a36a5", kill_on_drop: false }`
[INFO] [stdout] 57e3f80dde37868312272a16c784cfd256e86ec27f089709f53838f3838a36a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec6b1a28f3bccf70dc19adc0556144c9ddad71748847f7555a14c452c3c1ebfc
[INFO] running `Command { std: "docker" "start" "-a" "ec6b1a28f3bccf70dc19adc0556144c9ddad71748847f7555a14c452c3c1ebfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling huffman-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `probs` is never read
[INFO] [stdout]   --> src/main.rs:26:13
[INFO] [stdout]    |
[INFO] [stdout] 26 |     let mut probs: HashMap<char, u32> = HashMap::new();
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "ec6b1a28f3bccf70dc19adc0556144c9ddad71748847f7555a14c452c3c1ebfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec6b1a28f3bccf70dc19adc0556144c9ddad71748847f7555a14c452c3c1ebfc", kill_on_drop: false }`
[INFO] [stdout] ec6b1a28f3bccf70dc19adc0556144c9ddad71748847f7555a14c452c3c1ebfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8390b46761bd0dec8c6854eef0accf2b5759ecda65587e05bdc8086b40674582
[INFO] running `Command { std: "docker" "start" "-a" "8390b46761bd0dec8c6854eef0accf2b5759ecda65587e05bdc8086b40674582", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `probs` is never read
[INFO] [stderr]   --> src/main.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut probs: HashMap<char, u32> = HashMap::new();
[INFO] [stderr]    |             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `huffman-rs` (bin "huffman-rs" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/huffman_rs-41b30c6bea916f98)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8390b46761bd0dec8c6854eef0accf2b5759ecda65587e05bdc8086b40674582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8390b46761bd0dec8c6854eef0accf2b5759ecda65587e05bdc8086b40674582", kill_on_drop: false }`
[INFO] [stdout] 8390b46761bd0dec8c6854eef0accf2b5759ecda65587e05bdc8086b40674582