[INFO] cloning repository https://github.com/eagledb14/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/eagledb14/huffman-encoding" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feagledb14%2Fhuffman-encoding", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feagledb14%2Fhuffman-encoding'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a104b06d1e8a198623da16b208df0db0bbfbd3e3
[INFO] checking eagledb14/huffman-encoding/a104b06d1e8a198623da16b208df0db0bbfbd3e3 against try#9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132 for pr-133274
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feagledb14%2Fhuffman-encoding" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eagledb14/huffman-encoding on toolchain 9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eagledb14/huffman-encoding
[INFO] finished tweaking git repo https://github.com/eagledb14/huffman-encoding
[INFO] tweaked toml for git repo https://github.com/eagledb14/huffman-encoding written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/eagledb14/huffman-encoding 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" "+9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c3ed0a015463180e8b899587ab2bccab26f95aff2dd82c10e2806ed257a76c3
[INFO] running `Command { std: "docker" "start" "-a" "3c3ed0a015463180e8b899587ab2bccab26f95aff2dd82c10e2806ed257a76c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c3ed0a015463180e8b899587ab2bccab26f95aff2dd82c10e2806ed257a76c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c3ed0a015463180e8b899587ab2bccab26f95aff2dd82c10e2806ed257a76c3", kill_on_drop: false }`
[INFO] [stdout] 3c3ed0a015463180e8b899587ab2bccab26f95aff2dd82c10e2806ed257a76c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae04ea4f3e738445d0fc1b50869fcb655a76cece1799f81d2d1df9d4740c00e6
[INFO] running `Command { std: "docker" "start" "-a" "ae04ea4f3e738445d0fc1b50869fcb655a76cece1799f81d2d1df9d4740c00e6", kill_on_drop: false }`
[INFO] [stderr]     Checking compression-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `filename` is never read
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut filename = "".to_owned();
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `savename` is never read
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut savename = "temp".to_owned();
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `filename` is never read
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut filename = "".to_owned();
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `savename` is never read
[INFO] [stdout]   --> src/main.rs:20:13
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut savename = "temp".to_owned();
[INFO] [stdout]    |             ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "ae04ea4f3e738445d0fc1b50869fcb655a76cece1799f81d2d1df9d4740c00e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae04ea4f3e738445d0fc1b50869fcb655a76cece1799f81d2d1df9d4740c00e6", kill_on_drop: false }`
[INFO] [stdout] ae04ea4f3e738445d0fc1b50869fcb655a76cece1799f81d2d1df9d4740c00e6