[INFO] fetching crate impedance 0.3.0...
[INFO] checking impedance-0.3.0 against 1.95.0 for pr-155915
[INFO] extracting crate impedance 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate impedance 0.3.0
[INFO] finished tweaking crates.io crate impedance 0.3.0
[INFO] tweaked toml for crates.io crate impedance 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate impedance 0.3.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 93 packages to latest compatible versions
[INFO] [stderr]       Adding parking_lot v0.11.2 (available: v0.12.5)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-signal v0.2.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e832e6fd96b1dfcdbcf0575a98520f77630e66ae9817db46c470f32dcbbc7ed4
[INFO] running `Command { std: "docker" "start" "-a" "e832e6fd96b1dfcdbcf0575a98520f77630e66ae9817db46c470f32dcbbc7ed4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e832e6fd96b1dfcdbcf0575a98520f77630e66ae9817db46c470f32dcbbc7ed4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e832e6fd96b1dfcdbcf0575a98520f77630e66ae9817db46c470f32dcbbc7ed4", kill_on_drop: false }`
[INFO] [stdout] e832e6fd96b1dfcdbcf0575a98520f77630e66ae9817db46c470f32dcbbc7ed4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bca7d1de66986f7ce94f158a4cb9039e80244fd517a1cc534b0b8becf231e39
[INFO] running `Command { std: "docker" "start" "-a" "1bca7d1de66986f7ce94f158a4cb9039e80244fd517a1cc534b0b8becf231e39", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]     Checking linux-raw-sys v0.12.1
[INFO] [stderr]     Checking futures-lite v2.6.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking piper v0.2.5
[INFO] [stderr]     Checking futures-channel v0.3.32
[INFO] [stderr]     Checking event-listener v5.4.1
[INFO] [stderr]     Checking log v0.4.29
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking async-channel v1.9.0
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling pin-project-internal v1.1.12
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]     Checking event-listener-strategy v0.5.4
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking async-channel v2.5.0
[INFO] [stderr]     Checking async-lock v3.4.2
[INFO] [stderr]     Checking tokio v1.52.3
[INFO] [stderr]     Checking async-executor v1.14.0
[INFO] [stderr]     Checking blocking v1.6.2
[INFO] [stderr]     Checking pin-project v1.1.12
[INFO] [stderr]     Checking futures-util v0.3.32
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]     Checking impedance v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-executor v0.3.32
[INFO] [stderr]     Checking futures v0.3.32
[INFO] [stderr]     Checking polling v3.11.0
[INFO] [stderr]     Checking async-io v2.6.0
[INFO] [stderr]     Checking async-signal v0.2.14
[INFO] [stderr]     Checking async-global-executor v2.4.1
[INFO] [stderr]     Checking async-process v2.5.0
[INFO] [stderr]     Checking async-std v1.13.2
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/comparisons.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![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 `impedance` (bench "comparisons") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1bca7d1de66986f7ce94f158a4cb9039e80244fd517a1cc534b0b8becf231e39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bca7d1de66986f7ce94f158a4cb9039e80244fd517a1cc534b0b8becf231e39", kill_on_drop: false }`
[INFO] [stdout] 1bca7d1de66986f7ce94f158a4cb9039e80244fd517a1cc534b0b8becf231e39
