[INFO] cloning repository https://github.com/MagiHotline/learn_to_get_burnt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MagiHotline/learn_to_get_burnt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagiHotline%2Flearn_to_get_burnt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagiHotline%2Flearn_to_get_burnt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f4b75103eca0828c59dadf29e4771682ccef3fe
[INFO] checking MagiHotline/learn_to_get_burnt against 3154cc1a3e6424e44f438a95007d043ed5ceaaf6+rustflags=-Znext-solver=coherence for pr-133502-30
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMagiHotline%2Flearn_to_get_burnt" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/MagiHotline/learn_to_get_burnt
[INFO] finished tweaking git repo https://github.com/MagiHotline/learn_to_get_burnt
[INFO] tweaked toml for git repo https://github.com/MagiHotline/learn_to_get_burnt written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/MagiHotline/learn_to_get_burnt on toolchain 3154cc1a3e6424e44f438a95007d043ed5ceaaf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/MagiHotline/learn_to_get_burnt 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" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897
[INFO] running `Command { std: "docker" "start" "60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Znext-solver=coherence" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897" "/opt/rustwide/cargo-home/bin/cargo" "+3154cc1a3e6424e44f438a95007d043ed5ceaaf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking burn v0.21.0
[INFO] [stderr]     Checking custom_csv_dataset v0.1.0 (/opt/rustwide/workdir/custom_csv_dataset)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> custom_csv_dataset/src/utils.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut response = reqwest::blocking::get(url).unwrap();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> custom_csv_dataset/src/utils.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut response = reqwest::blocking::get(url).unwrap();
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6m 34s
[INFO] running `Command { std: "docker" "inspect" "60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897", kill_on_drop: false }`
[INFO] [stdout] 60211b6a16bc52cfe789430173ec42348c103316cca1f9f1c1ddf3ad2986e897