[INFO] fetching crate generic_logger 0.4.0...
[INFO] checking generic_logger-0.4.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate generic_logger 0.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate generic_logger 0.4.0
[INFO] finished tweaking crates.io crate generic_logger 0.4.0
[INFO] tweaked toml for crates.io crate generic_logger 0.4.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate generic_logger 0.4.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 931972601e090b1fb0786c21aeb1c2a2aa50106d57ae44ea3936aeba13ccbef7
[INFO] running `Command { std: "docker" "start" "-a" "931972601e090b1fb0786c21aeb1c2a2aa50106d57ae44ea3936aeba13ccbef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "931972601e090b1fb0786c21aeb1c2a2aa50106d57ae44ea3936aeba13ccbef7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "931972601e090b1fb0786c21aeb1c2a2aa50106d57ae44ea3936aeba13ccbef7", kill_on_drop: false }`
[INFO] [stdout] 931972601e090b1fb0786c21aeb1c2a2aa50106d57ae44ea3936aeba13ccbef7
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a06bb5468bd5150a3bfdc8e4890ca77a7d0c05a46e7116f7732aea5ac250a4a3
[INFO] running `Command { std: "docker" "start" "-a" "a06bb5468bd5150a3bfdc8e4890ca77a7d0c05a46e7116f7732aea5ac250a4a3", kill_on_drop: false }`
[INFO] [stderr]     Checking generic_logger v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fs::File` and `io::Write`
[INFO] [stdout]  --> src/logger.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::Write};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fileio_logger.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut file = OpenOptions::new()
[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: unused imports: `fs::File` and `io::Write`
[INFO] [stdout]  --> src/logger.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fs::File, io::Write};
[INFO] [stdout]   |           ^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fileio_logger.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |         let mut file = OpenOptions::new()
[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 0.17s
[INFO] running `Command { std: "docker" "inspect" "a06bb5468bd5150a3bfdc8e4890ca77a7d0c05a46e7116f7732aea5ac250a4a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a06bb5468bd5150a3bfdc8e4890ca77a7d0c05a46e7116f7732aea5ac250a4a3", kill_on_drop: false }`
[INFO] [stdout] a06bb5468bd5150a3bfdc8e4890ca77a7d0c05a46e7116f7732aea5ac250a4a3