[INFO] cloning repository https://github.com/vhdirk/gnome-class
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vhdirk/gnome-class" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvhdirk%2Fgnome-class", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvhdirk%2Fgnome-class'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d01a5b2e1ac893a3b3a118992e9943c9c01f67c0
[INFO] checking vhdirk/gnome-class against try#9cfe725f0995b018340c519db1b2f3cf8a7e0631 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvhdirk%2Fgnome-class" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vhdirk/gnome-class on toolchain 9cfe725f0995b018340c519db1b2f3cf8a7e0631
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-4/source/Cargo.toml
[INFO] crate git repo https://github.com/vhdirk/gnome-class already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded term v0.5.1
[INFO] [stderr]   Downloaded proc-macro2 v0.3.6
[INFO] [stderr]   Downloaded num-traits v0.2.2
[INFO] [stderr]   Downloaded regex-syntax v0.5.5
[INFO] [stderr]   Downloaded socket2 v0.3.5
[INFO] [stderr]   Downloaded cargo_metadata v0.5.4
[INFO] [stderr]   Downloaded scoped-tls v0.1.1
[INFO] [stderr]   Downloaded smallvec v0.6.0
[INFO] [stderr]   Downloaded diff v0.1.11
[INFO] [stderr]   Downloaded env_logger v0.5.8
[INFO] [stderr]   Downloaded owning_ref v0.3.3
[INFO] [stderr]   Downloaded parking_lot_core v0.2.13
[INFO] [stderr]   Downloaded regex v0.2.10
[INFO] [stderr]   Downloaded serde v1.0.38
[INFO] [stderr]   Downloaded cc v1.0.10
[INFO] [stderr]   Downloaded backtrace v0.3.6
[INFO] [stderr]   Downloaded derive-new v0.5.4
[INFO] [stderr]   Downloaded parking_lot v0.5.4
[INFO] [stderr]   Downloaded atty v0.2.8
[INFO] [stderr]   Downloaded getopts v0.2.17
[INFO] [stderr]   Downloaded quote v0.5.1
[INFO] [stderr]   Downloaded serde_json v1.0.14
[INFO] [stderr]   Downloaded stable_deref_trait v1.0.0
[INFO] [stderr]   Downloaded serde_derive v1.0.38
[INFO] [stderr]   Downloaded rustc-ap-syntax_pos v94.0.0
[INFO] [stderr]   Downloaded compiletest_rs v0.3.10
[INFO] [stderr]   Downloaded miow v0.3.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v94.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v94.0.0
[INFO] [stderr]   Downloaded ena v0.9.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_cratesio_shim v94.0.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.7
[INFO] [stderr]   Downloaded rustc-ap-syntax v94.0.0
[INFO] [stderr]   Downloaded rustfmt-nightly v0.4.2
[INFO] [stderr]   Downloaded rustc-ap-serialize v94.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 03ba813a7fae964c6b67f8974d4ee402994ba03ecc5d59b3582cd646acc9e654
[INFO] running `Command { std: "docker" "start" "-a" "03ba813a7fae964c6b67f8974d4ee402994ba03ecc5d59b3582cd646acc9e654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03ba813a7fae964c6b67f8974d4ee402994ba03ecc5d59b3582cd646acc9e654", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03ba813a7fae964c6b67f8974d4ee402994ba03ecc5d59b3582cd646acc9e654", kill_on_drop: false }`
[INFO] [stdout] 03ba813a7fae964c6b67f8974d4ee402994ba03ecc5d59b3582cd646acc9e654
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+9cfe725f0995b018340c519db1b2f3cf8a7e0631" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e32a4532eca09d24251bd4127bd1998ad1d1ded41e4f8f8cf1ce60f3e2644b0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1e32a4532eca09d24251bd4127bd1998ad1d1ded41e4f8f8cf1ce60f3e2644b0", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.10
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]     Checking stable_deref_trait v1.0.0
[INFO] [stderr]     Checking smallvec v0.6.0
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking bitflags v1.0.1
[INFO] [stderr]     Checking serde v1.0.38
[INFO] [stderr]    Compiling rustc-ap-syntax v94.0.0
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking rustc-ap-serialize v94.0.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking itoa v0.4.1
[INFO] [stderr]    Compiling compiletest_rs v0.3.10
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking ucd-util v0.1.1
[INFO] [stderr]    Compiling rustfmt-nightly v0.4.2
[INFO] [stderr]     Checking termcolor v0.3.6
[INFO] [stderr]     Checking rustc-demangle v0.1.7
[INFO] [stderr]     Checking scoped-tls v0.1.1
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking num-traits v0.2.2
[INFO] [stdout] error: `allow_internal_unstable` expects a list of feature names
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/scoped-tls-0.1.1/src/lib.rs:71:1
[INFO] [stdout]    |
[INFO] [stdout] 71 | #[allow_internal_unstable]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `scoped-tls`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1e32a4532eca09d24251bd4127bd1998ad1d1ded41e4f8f8cf1ce60f3e2644b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e32a4532eca09d24251bd4127bd1998ad1d1ded41e4f8f8cf1ce60f3e2644b0", kill_on_drop: false }`
[INFO] [stdout] 1e32a4532eca09d24251bd4127bd1998ad1d1ded41e4f8f8cf1ce60f3e2644b0