[INFO] fetching crate perf_monitor 0.2.1...
[INFO] testing perf_monitor-0.2.1 against 1.91.0 for beta-1.92-2
[INFO] extracting crate perf_monitor 0.2.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate perf_monitor 0.2.1
[INFO] finished tweaking crates.io crate perf_monitor 0.2.1
[INFO] tweaked toml for crates.io crate perf_monitor 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate perf_monitor 0.2.1 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate perf_monitor 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror-impl v1.0.60
[INFO] [stderr]   Downloaded either v1.11.0
[INFO] [stderr]   Downloaded thiserror v1.0.60
[INFO] [stderr]   Downloaded proc-macro2 v1.0.82
[INFO] [stderr]   Downloaded bindgen v0.59.2
[INFO] [stderr]   Downloaded cc v1.0.97
[INFO] [stderr]   Downloaded syn v2.0.62
[INFO] [stderr]   Downloaded libc v0.2.154
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3be1f43ef63542cc6aca62234cb3ea0692660d3643eba2820dfdba0c96b2152
[INFO] running `Command { std: "docker" "start" "-a" "b3be1f43ef63542cc6aca62234cb3ea0692660d3643eba2820dfdba0c96b2152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3be1f43ef63542cc6aca62234cb3ea0692660d3643eba2820dfdba0c96b2152", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3be1f43ef63542cc6aca62234cb3ea0692660d3643eba2820dfdba0c96b2152", kill_on_drop: false }`
[INFO] [stdout] b3be1f43ef63542cc6aca62234cb3ea0692660d3643eba2820dfdba0c96b2152
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7f6733fde9b5b7d6da2629639b4cd694deb9938a2d36ac2f5a1718ac8576cd14
[INFO] running `Command { std: "docker" "start" "-a" "7f6733fde9b5b7d6da2629639b4cd694deb9938a2d36ac2f5a1718ac8576cd14", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.154
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.82
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling linux-raw-sys v0.4.13
[INFO] [stderr]    Compiling unicode-width v0.1.12
[INFO] [stderr]    Compiling bitflags v2.5.0
[INFO] [stderr]    Compiling libloading v0.8.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling either v1.11.0
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling clang-sys v1.7.0
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling rustix v0.38.34
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v2.0.62
[INFO] [stderr]    Compiling thiserror v1.0.60
[INFO] [stderr]    Compiling cc v1.0.97
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.60
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling env_logger v0.9.3
[INFO] [stderr]    Compiling perf_monitor v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `fd_count_pid` is never used
[INFO] [stdout]  --> src/fd/android_linux.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fd_count_pid(pid: u32) -> std::io::Result<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `HandleUpgrade` is never used
[INFO] [stdout]  --> src/utils/ptr_upgrade.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait HandleUpgrade: Sized {
[INFO] [stdout]   |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.59s
[INFO] running `Command { std: "docker" "inspect" "7f6733fde9b5b7d6da2629639b4cd694deb9938a2d36ac2f5a1718ac8576cd14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f6733fde9b5b7d6da2629639b4cd694deb9938a2d36ac2f5a1718ac8576cd14", kill_on_drop: false }`
[INFO] [stdout] 7f6733fde9b5b7d6da2629639b4cd694deb9938a2d36ac2f5a1718ac8576cd14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec15030a98b7c78f175d88b0c40c011c1a1bd5b34dfb207f84dd261d5116006a
[INFO] running `Command { std: "docker" "start" "-a" "ec15030a98b7c78f175d88b0c40c011c1a1bd5b34dfb207f84dd261d5116006a", kill_on_drop: false }`
[INFO] [stdout] warning: function `fd_count_pid` is never used
[INFO] [stdout]  --> src/fd/android_linux.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn fd_count_pid(pid: u32) -> std::io::Result<usize> {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `HandleUpgrade` is never used
[INFO] [stdout]  --> src/utils/ptr_upgrade.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub trait HandleUpgrade: Sized {
[INFO] [stdout]   |           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling perf_monitor v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]   |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `perf_monitor` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ec15030a98b7c78f175d88b0c40c011c1a1bd5b34dfb207f84dd261d5116006a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec15030a98b7c78f175d88b0c40c011c1a1bd5b34dfb207f84dd261d5116006a", kill_on_drop: false }`
[INFO] [stdout] ec15030a98b7c78f175d88b0c40c011c1a1bd5b34dfb207f84dd261d5116006a