[INFO] updating cached repository https://github.com/vhdirk/gnome-class
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d01a5b2e1ac893a3b3a118992e9943c9c01f67c0
[INFO] checking vhdirk/gnome-class against master#446e5e57b667c841ba3ebb4b41b44fb98bd3af4b for pr-65294
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvhdirk%2Fgnome-class" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vhdirk/gnome-class on toolchain 446e5e57b667c841ba3ebb4b41b44fb98bd3af4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/vhdirk/gnome-class
[INFO] finished tweaking git repo https://github.com/vhdirk/gnome-class
[INFO] tweaked toml for git repo https://github.com/vhdirk/gnome-class written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/vhdirk/gnome-class already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2748c1cce4805a25aa059ca8648c0689f55aafaf1f96799d905c2f62b3be343a
[INFO] running `"docker" "start" "-a" "2748c1cce4805a25aa059ca8648c0689f55aafaf1f96799d905c2f62b3be343a"`
[INFO] [stderr]    Compiling stable_deref_trait v1.0.0
[INFO] [stderr]    Compiling rustc-ap-syntax v94.0.0
[INFO] [stderr]    Compiling smallvec v0.6.0
[INFO] [stderr]    Compiling serde v1.0.38
[INFO] [stderr]     Checking rustc-ap-serialize v94.0.0
[INFO] [stderr]    Compiling rustfmt-nightly v0.4.2
[INFO] [stderr]     Checking scoped-tls v0.1.1
[INFO] [stderr]    Compiling compiletest_rs v0.3.10
[INFO] [stderr] error: allow_internal_unstable expects list of feature names
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/scoped-tls-0.1.1/src/lib.rs:71:1
[INFO] [stderr]    |
[INFO] [stderr] 71 | #[allow_internal_unstable]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `scoped-tls`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2748c1cce4805a25aa059ca8648c0689f55aafaf1f96799d905c2f62b3be343a"`
[INFO] running `"docker" "rm" "-f" "2748c1cce4805a25aa059ca8648c0689f55aafaf1f96799d905c2f62b3be343a"`
[INFO] [stdout] 2748c1cce4805a25aa059ca8648c0689f55aafaf1f96799d905c2f62b3be343a