[INFO] cloning repository https://github.com/goodvibs/compact-option
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/goodvibs/compact-option" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoodvibs%2Fcompact-option", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoodvibs%2Fcompact-option'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1976febe3b55389fb55f0a929cdf53a98a3be86c
[INFO] checking goodvibs/compact-option against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgoodvibs%2Fcompact-option" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-4-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/goodvibs/compact-option
[INFO] finished tweaking git repo https://github.com/goodvibs/compact-option
[INFO] tweaked toml for git repo https://github.com/goodvibs/compact-option written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/goodvibs/compact-option 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 git repo https://github.com/goodvibs/compact-option 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded target-triple v1.0.0
[INFO] [stderr]   Downloaded trybuild v1.0.116
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 52424651d75147eccb55d47ac12cbd46f9cfb620e069e9874dc221b9ab711e3c
[INFO] running `Command { std: "docker" "start" "-a" "52424651d75147eccb55d47ac12cbd46f9cfb620e069e9874dc221b9ab711e3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52424651d75147eccb55d47ac12cbd46f9cfb620e069e9874dc221b9ab711e3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52424651d75147eccb55d47ac12cbd46f9cfb620e069e9874dc221b9ab711e3c", kill_on_drop: false }`
[INFO] [stdout] 52424651d75147eccb55d47ac12cbd46f9cfb620e069e9874dc221b9ab711e3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6e6eb419c3a123c5f58ad421ccbbae0e95b2e3e582240ddb392bd1ca319f0aa9
[INFO] running `Command { std: "docker" "start" "-a" "6e6eb419c3a123c5f58ad421ccbbae0e95b2e3e582240ddb392bd1ca319f0aa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.185
[INFO] [stderr]    Compiling zerocopy v0.8.48
[INFO] [stderr]     Checking bitflags v2.11.1
[INFO] [stderr]     Checking winnow v1.0.2
[INFO] [stderr]     Checking unicode-ident v1.0.24
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking toml_writer v1.1.1+spec-1.1.0
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]     Checking memchr v2.8.0
[INFO] [stderr]     Checking toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]     Checking serde_spanned v1.1.1
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking glob v0.3.3
[INFO] [stderr]     Checking regex-syntax v0.8.10
[INFO] [stderr]     Checking proc-macro2 v1.0.106
[INFO] [stderr]     Checking compact-option v0.1.0 (/opt/rustwide/workdir/core)
[INFO] [stderr]     Checking toml_parser v1.1.2+spec-1.1.0
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> core/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_trait_impl)]
[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 `compact-option` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6e6eb419c3a123c5f58ad421ccbbae0e95b2e3e582240ddb392bd1ca319f0aa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e6eb419c3a123c5f58ad421ccbbae0e95b2e3e582240ddb392bd1ca319f0aa9", kill_on_drop: false }`
[INFO] [stdout] 6e6eb419c3a123c5f58ad421ccbbae0e95b2e3e582240ddb392bd1ca319f0aa9
