[INFO] fetching crate libc_tools 0.1.0...
[INFO] checking libc_tools-0.1.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate libc_tools 0.1.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate libc_tools 0.1.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libc_tools 0.1.0
[INFO] finished tweaking crates.io crate libc_tools 0.1.0
[INFO] tweaked toml for crates.io crate libc_tools 0.1.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8682e84e5dafec7a358ef7f9a992abd0de35d9c5838672583975d1a145a7a7c6
[INFO] running `Command { std: "docker" "start" "-a" "8682e84e5dafec7a358ef7f9a992abd0de35d9c5838672583975d1a145a7a7c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8682e84e5dafec7a358ef7f9a992abd0de35d9c5838672583975d1a145a7a7c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8682e84e5dafec7a358ef7f9a992abd0de35d9c5838672583975d1a145a7a7c6", kill_on_drop: false }`
[INFO] [stdout] 8682e84e5dafec7a358ef7f9a992abd0de35d9c5838672583975d1a145a7a7c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e976e122fcb8d8c631591655c0dafe81887439f14ba0fd3b65346a4f99826aab
[INFO] running `Command { std: "docker" "start" "-a" "e976e122fcb8d8c631591655c0dafe81887439f14ba0fd3b65346a4f99826aab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking libc_tools v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `stdout`
[INFO] [stdout]   --> src/pipe.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |             stdout,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `stdout: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stdin`
[INFO] [stdout]   --> src/pipe.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             stdin,
[INFO] [stdout]    |             ^^^^^ help: try ignoring the field: `stdin: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stderr`
[INFO] [stdout]   --> src/pipe.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             stderr,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `stderr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stdout`
[INFO] [stdout]   --> src/pipe.rs:81:13
[INFO] [stdout]    |
[INFO] [stdout] 81 |             stdout,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `stdout: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stdin`
[INFO] [stdout]   --> src/pipe.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             stdin,
[INFO] [stdout]    |             ^^^^^ help: try ignoring the field: `stdin: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stderr`
[INFO] [stdout]   --> src/pipe.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             stderr,
[INFO] [stdout]    |             ^^^^^^ help: try ignoring the field: `stderr: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pipe2`
[INFO] [stdout]   --> src/pipe.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn pipe2(flag: i32) -> Option<Pipe> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_str`
[INFO] [stdout]   --> src/pipe.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn as_str(&self) -> &'static str {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WaitFailure`
[INFO] [stdout]  --> src/wait.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     WaitFailure,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WNoHangExit`
[INFO] [stdout]  --> src/wait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     WNoHangExit,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `children`
[INFO] [stdout]  --> src/wait.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub fn children() -> Result<(libc::pid_t, libc::c_int), Wait> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `children_with`
[INFO] [stdout]   --> src/wait.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn children_with(
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pipe2`
[INFO] [stdout]   --> src/pipe.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn pipe2(flag: i32) -> Option<Pipe> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_str`
[INFO] [stdout]   --> src/pipe.rs:52:8
[INFO] [stdout]    |
[INFO] [stdout] 52 |     fn as_str(&self) -> &'static str {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WaitFailure`
[INFO] [stdout]  --> src/wait.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     WaitFailure,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `WNoHangExit`
[INFO] [stdout]  --> src/wait.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     WNoHangExit,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `children`
[INFO] [stdout]  --> src/wait.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub fn children() -> Result<(libc::pid_t, libc::c_int), Wait> {
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `children_with`
[INFO] [stdout]   --> src/wait.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn children_with(
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "e976e122fcb8d8c631591655c0dafe81887439f14ba0fd3b65346a4f99826aab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e976e122fcb8d8c631591655c0dafe81887439f14ba0fd3b65346a4f99826aab", kill_on_drop: false }`
[INFO] [stdout] e976e122fcb8d8c631591655c0dafe81887439f14ba0fd3b65346a4f99826aab