[INFO] cloning repository https://github.com/jonjomckay/fsmetrics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jonjomckay/fsmetrics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonjomckay%2Ffsmetrics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonjomckay%2Ffsmetrics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86a6bc7b8a44b47262bab8e2091d6ff49c8ab499
[INFO] checking jonjomckay/fsmetrics against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjonjomckay%2Ffsmetrics" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jonjomckay/fsmetrics on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jonjomckay/fsmetrics
[INFO] finished tweaking git repo https://github.com/jonjomckay/fsmetrics
[INFO] tweaked toml for git repo https://github.com/jonjomckay/fsmetrics written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/jonjomckay/fsmetrics already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4121bef2e044a816d01c82e97ebd5827f48b0054b3e2524ec51bd6cff9b2c6f9
[INFO] running `Command { std: "docker" "start" "-a" "4121bef2e044a816d01c82e97ebd5827f48b0054b3e2524ec51bd6cff9b2c6f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4121bef2e044a816d01c82e97ebd5827f48b0054b3e2524ec51bd6cff9b2c6f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4121bef2e044a816d01c82e97ebd5827f48b0054b3e2524ec51bd6cff9b2c6f9", kill_on_drop: false }`
[INFO] [stdout] 4121bef2e044a816d01c82e97ebd5827f48b0054b3e2524ec51bd6cff9b2c6f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 78181f61cd264624e3091c3e9fb687750d916a25981fa279f40be012bc9b6cfc
[INFO] running `Command { std: "docker" "start" "-a" "78181f61cd264624e3091c3e9fb687750d916a25981fa279f40be012bc9b6cfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking fanotify-rs v0.3.0 (https://github.com/ZhangLei-cn/fanotify-rs#4987bc7f)
[INFO] [stderr]     Checking fsmetrics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `FAN_ACCESS_PERM`, `FAN_MOVE`, `FAN_OPEN_PERM`, `FanotifyMode`, `FanotifyResponse`, `Fanotify`
[INFO] [stdout]  --> src/main.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | ...::{Fanotify, FanotifyMode, FAN_OPEN, FAN_CLOSE, FAN_ACCESS, FAN_MODIFY, FAN_ONDIR, FanEvent, FAN_EVENT_ON_CHILD, FanotifyResponse, FAN_ACCESS_PERM, FAN_OPEN_PERM, FAN_MOVE, F...
[INFO] [stdout]   |       ^^^^^^^^  ^^^^^^^^^^^^                                                                                        ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FAN_CLASS_CONTENT`, `FAN_CLOEXEC`, `FAN_REPORT_DIR_FID`
[INFO] [stdout]  --> src/main.rs:4:58
[INFO] [stdout]   |
[INFO] [stdout] 4 | ...t, FAN_CLOEXEC, O_CLOEXEC, O_RDONLY, FAN_CLASS_CONTENT, FAN_MARK_ADD, AT_FDCWD, fanotify_mark, fanotify_read, close_fd, FAN_CLASS_NOTIF, FAN_REPORT_DIR_FI...
[INFO] [stdout]   |       ^^^^^^^^^^^                       ^^^^^^^^^^^^^^^^^                                                                                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if (poll_num > 0) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FAN_ACCESS_PERM`, `FAN_MOVE`, `FAN_OPEN_PERM`, `FanotifyMode`, `FanotifyResponse`, `Fanotify`
[INFO] [stdout]  --> src/main.rs:1:28
[INFO] [stdout]   |
[INFO] [stdout] 1 | ...::{Fanotify, FanotifyMode, FAN_OPEN, FAN_CLOSE, FAN_ACCESS, FAN_MODIFY, FAN_ONDIR, FanEvent, FAN_EVENT_ON_CHILD, FanotifyResponse, FAN_ACCESS_PERM, FAN_OPEN_PERM, FAN_MOVE, F...
[INFO] [stdout]   |       ^^^^^^^^  ^^^^^^^^^^^^                                                                                        ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FAN_CLASS_CONTENT`, `FAN_CLOEXEC`, `FAN_REPORT_DIR_FID`
[INFO] [stdout]  --> src/main.rs:4:58
[INFO] [stdout]   |
[INFO] [stdout] 4 | ...t, FAN_CLOEXEC, O_CLOEXEC, O_RDONLY, FAN_CLASS_CONTENT, FAN_MARK_ADD, AT_FDCWD, fanotify_mark, fanotify_read, close_fd, FAN_CLASS_NOTIF, FAN_REPORT_DIR_FI...
[INFO] [stdout]   |       ^^^^^^^^^^^                       ^^^^^^^^^^^^^^^^^                                                                                   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |         if (poll_num > 0) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.04s
[INFO] running `Command { std: "docker" "inspect" "78181f61cd264624e3091c3e9fb687750d916a25981fa279f40be012bc9b6cfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78181f61cd264624e3091c3e9fb687750d916a25981fa279f40be012bc9b6cfc", kill_on_drop: false }`
[INFO] [stdout] 78181f61cd264624e3091c3e9fb687750d916a25981fa279f40be012bc9b6cfc