[INFO] cloning repository https://github.com/alexanderjeurissen/lint-staged
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexanderjeurissen/lint-staged" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexanderjeurissen%2Flint-staged", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexanderjeurissen%2Flint-staged'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e607ab521bf76e793a583fa47e66f8984b7c5ca9
[INFO] testing alexanderjeurissen/lint-staged against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexanderjeurissen%2Flint-staged" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexanderjeurissen/lint-staged on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alexanderjeurissen/lint-staged
[INFO] finished tweaking git repo https://github.com/alexanderjeurissen/lint-staged
[INFO] tweaked toml for git repo https://github.com/alexanderjeurissen/lint-staged written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/alexanderjeurissen/lint-staged already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21ce67070ac5d69cffc66e72a94f662bc9e2f9c102bca3f2ad741ab30aa19734
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "21ce67070ac5d69cffc66e72a94f662bc9e2f9c102bca3f2ad741ab30aa19734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21ce67070ac5d69cffc66e72a94f662bc9e2f9c102bca3f2ad741ab30aa19734", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21ce67070ac5d69cffc66e72a94f662bc9e2f9c102bca3f2ad741ab30aa19734", kill_on_drop: false }`
[INFO] [stdout] 21ce67070ac5d69cffc66e72a94f662bc9e2f9c102bca3f2ad741ab30aa19734
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 802f0b8886d9d186370731695b90b390a4efdd5e204ab68c51937a48d4bbd388
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "802f0b8886d9d186370731695b90b390a4efdd5e204ab68c51937a48d4bbd388", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.36
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling chrono v0.4.13
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]    Compiling structopt-derive v0.4.8
[INFO] [stderr]    Compiling structopt v0.3.15
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling lint-staged v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/lint.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `warn`
[INFO] [stdout]  --> src/lint.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{debug, info, trace, warn};
[INFO] [stdout]   |                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write`, `self`
[INFO] [stdout]  --> src/lint.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/git_utils.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let output = Command::new("git")
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `git_create_backup`
[INFO] [stdout]   --> src/git_utils.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn git_create_backup() -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | /     &staged_files
[INFO] [stdout] 61 | |         .iter()
[INFO] [stdout] 62 | |         .group_by(|file| match &file.extension() {
[INFO] [stdout] 63 | |             Some(ext) => ext.to_str().unwrap(),
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |             }
[INFO] [stdout] 73 | |         });
[INFO] [stdout]    | |__________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let _ = &staged_files
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "802f0b8886d9d186370731695b90b390a4efdd5e204ab68c51937a48d4bbd388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "802f0b8886d9d186370731695b90b390a4efdd5e204ab68c51937a48d4bbd388", kill_on_drop: false }`
[INFO] [stdout] 802f0b8886d9d186370731695b90b390a4efdd5e204ab68c51937a48d4bbd388
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cda13c653b1ec5561a59ec6f59d7501bda48eeecfe259390f4e9e3491e97b543
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cda13c653b1ec5561a59ec6f59d7501bda48eeecfe259390f4e9e3491e97b543", kill_on_drop: false }`
[INFO] [stderr]    Compiling lint-staged v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]  --> src/lint.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::Itertools;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `warn`
[INFO] [stdout]  --> src/lint.rs:3:31
[INFO] [stdout]   |
[INFO] [stdout] 3 | use log::{debug, info, trace, warn};
[INFO] [stdout]   |                               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write`, `self`
[INFO] [stdout]  --> src/lint.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output`
[INFO] [stdout]   --> src/git_utils.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 33 |     let output = Command::new("git")
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `git_create_backup`
[INFO] [stdout]   --> src/git_utils.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub fn git_create_backup() -> Result<(), Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | /     &staged_files
[INFO] [stdout] 61 | |         .iter()
[INFO] [stdout] 62 | |         .group_by(|file| match &file.extension() {
[INFO] [stdout] 63 | |             Some(ext) => ext.to_str().unwrap(),
[INFO] [stdout] ...  |
[INFO] [stdout] 72 | |             }
[INFO] [stdout] 73 | |         });
[INFO] [stdout]    | |__________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let _ = &staged_files
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "cda13c653b1ec5561a59ec6f59d7501bda48eeecfe259390f4e9e3491e97b543", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cda13c653b1ec5561a59ec6f59d7501bda48eeecfe259390f4e9e3491e97b543", kill_on_drop: false }`
[INFO] [stdout] cda13c653b1ec5561a59ec6f59d7501bda48eeecfe259390f4e9e3491e97b543
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b9b0be5d4677eaeb1b0e064df278b6ce051b8724acbcc653914e6621f578a330
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b9b0be5d4677eaeb1b0e064df278b6ce051b8724acbcc653914e6621f578a330", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `itertools::Itertools`
[INFO] [stderr]  --> src/lint.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use itertools::Itertools;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `warn`
[INFO] [stderr]  --> src/lint.rs:3:31
[INFO] [stderr]   |
[INFO] [stderr] 3 | use log::{debug, info, trace, warn};
[INFO] [stderr]   |                               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Write`, `self`
[INFO] [stderr]  --> src/lint.rs:7:15
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{self, Write};
[INFO] [stderr]   |               ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/git_utils.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 |     let output = Command::new("git")
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_output`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `git_create_backup`
[INFO] [stderr]   --> src/git_utils.rs:28:8
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn git_create_backup() -> Result<(), Error> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/main.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 | /     &staged_files
[INFO] [stderr] 61 | |         .iter()
[INFO] [stderr] 62 | |         .group_by(|file| match &file.extension() {
[INFO] [stderr] 63 | |             Some(ext) => ext.to_str().unwrap(),
[INFO] [stderr] ...  |
[INFO] [stderr] 72 | |             }
[INFO] [stderr] 73 | |         });
[INFO] [stderr]    | |__________^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let _ = &staged_files
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `lint-staged` (bin "lint-staged" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/lint_staged-0e632734ae9bef59)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b9b0be5d4677eaeb1b0e064df278b6ce051b8724acbcc653914e6621f578a330", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9b0be5d4677eaeb1b0e064df278b6ce051b8724acbcc653914e6621f578a330", kill_on_drop: false }`
[INFO] [stdout] b9b0be5d4677eaeb1b0e064df278b6ce051b8724acbcc653914e6621f578a330