[INFO] fetching crate bimultimap 0.0.4...
[INFO] checking bimultimap-0.0.4 against 1.95.0 for pr-155915
[INFO] extracting crate bimultimap 0.0.4 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate bimultimap 0.0.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate bimultimap 0.0.4
[INFO] tweaked toml for crates.io crate bimultimap 0.0.4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate bimultimap 0.0.4 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] crate crates.io crate bimultimap 0.0.4 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ryu v1.0.19
[INFO] [stderr]   Downloaded mlua-sys v0.6.7
[INFO] [stderr]   Downloaded foldhash v0.1.4
[INFO] [stderr]   Downloaded serde_json v1.0.138
[INFO] [stderr]   Downloaded mlua v0.10.3
[INFO] [stderr]   Downloaded bstr v1.11.3
[INFO] [stderr]   Downloaded libc v0.2.170
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a3272cc2125facc2f0e3f3505f17e187cfd2e77db03931cafa487d41799718a2
[INFO] running `Command { std: "docker" "start" "-a" "a3272cc2125facc2f0e3f3505f17e187cfd2e77db03931cafa487d41799718a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3272cc2125facc2f0e3f3505f17e187cfd2e77db03931cafa487d41799718a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3272cc2125facc2f0e3f3505f17e187cfd2e77db03931cafa487d41799718a2", kill_on_drop: false }`
[INFO] [stdout] a3272cc2125facc2f0e3f3505f17e187cfd2e77db03931cafa487d41799718a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 9a7cec11053547e311f119f8939a514f5a97032b602f08d32aaebafffbd6a966
[INFO] running `Command { std: "docker" "start" "-a" "9a7cec11053547e311f119f8939a514f5a97032b602f08d32aaebafffbd6a966", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling serde_json v1.0.138
[INFO] [stderr]    Compiling bimultimap v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking itoa v1.0.14
[INFO] [stderr]     Checking ryu v1.0.19
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(coroutines)]
[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 `bimultimap` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9a7cec11053547e311f119f8939a514f5a97032b602f08d32aaebafffbd6a966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a7cec11053547e311f119f8939a514f5a97032b602f08d32aaebafffbd6a966", kill_on_drop: false }`
[INFO] [stdout] 9a7cec11053547e311f119f8939a514f5a97032b602f08d32aaebafffbd6a966
