[INFO] cloning repository https://github.com/Chernobyl81/file_watcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Chernobyl81/file_watcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChernobyl81%2Ffile_watcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChernobyl81%2Ffile_watcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e0b26f1f63ba6f3813a76a5a58d4348930ea172
[INFO] testing Chernobyl81/file_watcher against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FChernobyl81%2Ffile_watcher" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Chernobyl81/file_watcher on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Chernobyl81/file_watcher
[INFO] finished tweaking git repo https://github.com/Chernobyl81/file_watcher
[INFO] tweaked toml for git repo https://github.com/Chernobyl81/file_watcher written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Chernobyl81/file_watcher already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1547909fd4bad93c30a607babf74b56d0d2335c2f7a54524fe7384dbe31f98bd
[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" "1547909fd4bad93c30a607babf74b56d0d2335c2f7a54524fe7384dbe31f98bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1547909fd4bad93c30a607babf74b56d0d2335c2f7a54524fe7384dbe31f98bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1547909fd4bad93c30a607babf74b56d0d2335c2f7a54524fe7384dbe31f98bd", kill_on_drop: false }`
[INFO] [stdout] 1547909fd4bad93c30a607babf74b56d0d2335c2f7a54524fe7384dbe31f98bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 323697a86cebe98ba91795899d02f55b843bf0a95c9be60aa3aea9dde7dc24f7
[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" "323697a86cebe98ba91795899d02f55b843bf0a95c9be60aa3aea9dde7dc24f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling file_watcher v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `target_path`
[INFO] [stdout]   --> src/main.rs:50:15
[INFO] [stdout]    |
[INFO] [stdout] 50 |     if let Ok(target_path) = fs::read_dir(target) {
[INFO] [stdout]    |               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_target_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.11s
[INFO] running `Command { std: "docker" "inspect" "323697a86cebe98ba91795899d02f55b843bf0a95c9be60aa3aea9dde7dc24f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "323697a86cebe98ba91795899d02f55b843bf0a95c9be60aa3aea9dde7dc24f7", kill_on_drop: false }`
[INFO] [stdout] 323697a86cebe98ba91795899d02f55b843bf0a95c9be60aa3aea9dde7dc24f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f39d129dc64e04ff7217fa8c06e4b4545cd0bfdde7b205e32343c2cad2a2c5b
[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" "3f39d129dc64e04ff7217fa8c06e4b4545cd0bfdde7b205e32343c2cad2a2c5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling file_watcher v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `target_path`
[INFO] [stdout]   --> src/main.rs:50:15
[INFO] [stdout]    |
[INFO] [stdout] 50 |     if let Ok(target_path) = fs::read_dir(target) {
[INFO] [stdout]    |               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_target_path`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `Command { std: "docker" "inspect" "3f39d129dc64e04ff7217fa8c06e4b4545cd0bfdde7b205e32343c2cad2a2c5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f39d129dc64e04ff7217fa8c06e4b4545cd0bfdde7b205e32343c2cad2a2c5b", kill_on_drop: false }`
[INFO] [stdout] 3f39d129dc64e04ff7217fa8c06e4b4545cd0bfdde7b205e32343c2cad2a2c5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 72fb122f241ea2189f274cfb05fd80bdbaa9ae3aef989b64eaf34ba2ae934964
[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" "72fb122f241ea2189f274cfb05fd80bdbaa9ae3aef989b64eaf34ba2ae934964", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `target_path`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:50:15
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 50 |     if let Ok(target_path) = fs::read_dir(target) {
[INFO] [stdout] 
[INFO] [stderr]    |               ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_target_path`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `file_watcher` (bin "file_watcher" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/file_watcher-230870957e533eeb)
[INFO] running `Command { std: "docker" "inspect" "72fb122f241ea2189f274cfb05fd80bdbaa9ae3aef989b64eaf34ba2ae934964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72fb122f241ea2189f274cfb05fd80bdbaa9ae3aef989b64eaf34ba2ae934964", kill_on_drop: false }`
[INFO] [stdout] 72fb122f241ea2189f274cfb05fd80bdbaa9ae3aef989b64eaf34ba2ae934964