[INFO] fetching crate rlibcex 0.1.2...
[INFO] testing rlibcex-0.1.2 against 1.75.0 for beta-1.76-1
[INFO] extracting crate rlibcex 0.1.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate rlibcex 0.1.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rlibcex 0.1.2
[INFO] finished tweaking crates.io crate rlibcex 0.1.2
[INFO] tweaked toml for crates.io crate rlibcex 0.1.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 26edba584b710cbd2fd7d72cd47e079e0230ede24b9e9463fd1294c964981e3f
[INFO] running `Command { std: "docker" "start" "-a" "26edba584b710cbd2fd7d72cd47e079e0230ede24b9e9463fd1294c964981e3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "26edba584b710cbd2fd7d72cd47e079e0230ede24b9e9463fd1294c964981e3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26edba584b710cbd2fd7d72cd47e079e0230ede24b9e9463fd1294c964981e3f", kill_on_drop: false }`
[INFO] [stdout] 26edba584b710cbd2fd7d72cd47e079e0230ede24b9e9463fd1294c964981e3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad524e128db1335c9cae826e0e8eb437561f2bac0f81a1f61f79f07164f4c9e5
[INFO] running `Command { std: "docker" "start" "-a" "ad524e128db1335c9cae826e0e8eb437561f2bac0f81a1f61f79f07164f4c9e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlibcex v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "ad524e128db1335c9cae826e0e8eb437561f2bac0f81a1f61f79f07164f4c9e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad524e128db1335c9cae826e0e8eb437561f2bac0f81a1f61f79f07164f4c9e5", kill_on_drop: false }`
[INFO] [stdout] ad524e128db1335c9cae826e0e8eb437561f2bac0f81a1f61f79f07164f4c9e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e3f0954aca742d32fed4a59bd20ecd6be9e7712768fd44a2444b6363a96457b
[INFO] running `Command { std: "docker" "start" "-a" "9e3f0954aca742d32fed4a59bd20ecd6be9e7712768fd44a2444b6363a96457b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlibcex v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:27
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rlibcex` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9e3f0954aca742d32fed4a59bd20ecd6be9e7712768fd44a2444b6363a96457b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e3f0954aca742d32fed4a59bd20ecd6be9e7712768fd44a2444b6363a96457b", kill_on_drop: false }`
[INFO] [stdout] 9e3f0954aca742d32fed4a59bd20ecd6be9e7712768fd44a2444b6363a96457b
