[INFO] cloning repository https://github.com/Tomyyy-1337/Huffman-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Tomyyy-1337/Huffman-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomyyy-1337%2FHuffman-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomyyy-1337%2FHuffman-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5bab6844507385c86571888243b85cdbc797792e
[INFO] checking Tomyyy-1337/Huffman-Rust against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomyyy-1337%2FHuffman-Rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tomyyy-1337/Huffman-Rust on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tomyyy-1337/Huffman-Rust
[INFO] finished tweaking git repo https://github.com/Tomyyy-1337/Huffman-Rust
[INFO] tweaked toml for git repo https://github.com/Tomyyy-1337/Huffman-Rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Tomyyy-1337/Huffman-Rust 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded priority-queue v2.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d38a5cb5d2a7a313493e2b85ac06f7bbae8212349f178e60ba2a417406a6290
[INFO] running `Command { std: "docker" "start" "-a" "0d38a5cb5d2a7a313493e2b85ac06f7bbae8212349f178e60ba2a417406a6290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d38a5cb5d2a7a313493e2b85ac06f7bbae8212349f178e60ba2a417406a6290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d38a5cb5d2a7a313493e2b85ac06f7bbae8212349f178e60ba2a417406a6290", kill_on_drop: false }`
[INFO] [stdout] 0d38a5cb5d2a7a313493e2b85ac06f7bbae8212349f178e60ba2a417406a6290
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2a399a2c56467ac05cc56913e74ca0e405e1387573d36baad9638c71433895e
[INFO] running `Command { std: "docker" "start" "-a" "b2a399a2c56467ac05cc56913e74ca0e405e1387573d36baad9638c71433895e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking either v1.12.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking priority-queue v2.0.3
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking huffman v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/huffman.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::Reverse, collections::HashMap};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/huffman.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::Reverse, collections::HashMap};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.87s
[INFO] running `Command { std: "docker" "inspect" "b2a399a2c56467ac05cc56913e74ca0e405e1387573d36baad9638c71433895e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2a399a2c56467ac05cc56913e74ca0e405e1387573d36baad9638c71433895e", kill_on_drop: false }`
[INFO] [stdout] b2a399a2c56467ac05cc56913e74ca0e405e1387573d36baad9638c71433895e
[INFO] checking Tomyyy-1337/Huffman-Rust against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTomyyy-1337%2FHuffman-Rust" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Tomyyy-1337/Huffman-Rust on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Tomyyy-1337/Huffman-Rust
[INFO] finished tweaking git repo https://github.com/Tomyyy-1337/Huffman-Rust
[INFO] tweaked toml for git repo https://github.com/Tomyyy-1337/Huffman-Rust written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Tomyyy-1337/Huffman-Rust 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b70601a58a9f2b7c89edebc7b0582121e51418627bbb2b69f78f6bc5baddd25
[INFO] running `Command { std: "docker" "start" "-a" "1b70601a58a9f2b7c89edebc7b0582121e51418627bbb2b69f78f6bc5baddd25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b70601a58a9f2b7c89edebc7b0582121e51418627bbb2b69f78f6bc5baddd25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b70601a58a9f2b7c89edebc7b0582121e51418627bbb2b69f78f6bc5baddd25", kill_on_drop: false }`
[INFO] [stdout] 1b70601a58a9f2b7c89edebc7b0582121e51418627bbb2b69f78f6bc5baddd25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3c0bde89de23b1b9c72290946162c4a0c4db7ba4ff22b17a04cfb97bc43869d
[INFO] running `Command { std: "docker" "start" "-a" "a3c0bde89de23b1b9c72290946162c4a0c4db7ba4ff22b17a04cfb97bc43869d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking either v1.12.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]     Checking indexmap v2.2.6
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking priority-queue v2.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking huffman v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/huffman.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::Reverse, collections::HashMap};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/huffman.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{cmp::Reverse, collections::HashMap};
[INFO] [stdout]   |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.27s
[INFO] running `Command { std: "docker" "inspect" "a3c0bde89de23b1b9c72290946162c4a0c4db7ba4ff22b17a04cfb97bc43869d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3c0bde89de23b1b9c72290946162c4a0c4db7ba4ff22b17a04cfb97bc43869d", kill_on_drop: false }`
[INFO] [stdout] a3c0bde89de23b1b9c72290946162c4a0c4db7ba4ff22b17a04cfb97bc43869d