[INFO] cloning repository https://github.com/angelsflyinhell/line_reader
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/angelsflyinhell/line_reader" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangelsflyinhell%2Fline_reader", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangelsflyinhell%2Fline_reader'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34de3c46b446a7d7bc6a21ec5ca1679016b3386e
[INFO] checking angelsflyinhell/line_reader against try#3ec2a775459d36c7d90654e47c56ff7bb0d542ab for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fangelsflyinhell%2Fline_reader" "/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/angelsflyinhell/line_reader on toolchain 3ec2a775459d36c7d90654e47c56ff7bb0d542ab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/angelsflyinhell/line_reader
[INFO] finished tweaking git repo https://github.com/angelsflyinhell/line_reader
[INFO] tweaked toml for git repo https://github.com/angelsflyinhell/line_reader written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/angelsflyinhell/line_reader 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" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa7fd611b81e945f2b219bb366a08147d7b171a08c78b173a32befd023c74b0e
[INFO] running `Command { std: "docker" "start" "-a" "fa7fd611b81e945f2b219bb366a08147d7b171a08c78b173a32befd023c74b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa7fd611b81e945f2b219bb366a08147d7b171a08c78b173a32befd023c74b0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa7fd611b81e945f2b219bb366a08147d7b171a08c78b173a32befd023c74b0e", kill_on_drop: false }`
[INFO] [stdout] fa7fd611b81e945f2b219bb366a08147d7b171a08c78b173a32befd023c74b0e
[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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33f8a4afd539d18a73a054642ed8b4073e06616a9e52ed91b488aea3978ae8f0
[INFO] running `Command { std: "docker" "start" "-a" "33f8a4afd539d18a73a054642ed8b4073e06616a9e52ed91b488aea3978ae8f0", kill_on_drop: false }`
[INFO] [stderr]     Checking line_reader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn files_recursively(path: &Path, mut lines: i64) -> i64 {
[INFO] [stdout]   |                                   ----^^^^^
[INFO] [stdout]   |                                   |
[INFO] [stdout]   |                                   help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:7:35
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn files_recursively(path: &Path, mut lines: i64) -> i64 {
[INFO] [stdout]   |                                   ----^^^^^
[INFO] [stdout]   |                                   |
[INFO] [stdout]   |                                   help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "33f8a4afd539d18a73a054642ed8b4073e06616a9e52ed91b488aea3978ae8f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33f8a4afd539d18a73a054642ed8b4073e06616a9e52ed91b488aea3978ae8f0", kill_on_drop: false }`
[INFO] [stdout] 33f8a4afd539d18a73a054642ed8b4073e06616a9e52ed91b488aea3978ae8f0