[INFO] cloning repository https://github.com/exrook/leds
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/exrook/leds" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexrook%2Fleds", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexrook%2Fleds'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1dcef90d8b03061736453e2eb4c13fb1b9a3d246
[INFO] checking exrook/leds against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fexrook%2Fleds" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/exrook/leds on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/exrook/leds
[INFO] finished tweaking git repo https://github.com/exrook/leds
[INFO] tweaked toml for git repo https://github.com/exrook/leds written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/exrook/leds already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab4ffd39cef96246ac9c39ddb04567146cc220fe8c0dbf2f09f799c5baf94955
[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" "ab4ffd39cef96246ac9c39ddb04567146cc220fe8c0dbf2f09f799c5baf94955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab4ffd39cef96246ac9c39ddb04567146cc220fe8c0dbf2f09f799c5baf94955", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab4ffd39cef96246ac9c39ddb04567146cc220fe8c0dbf2f09f799c5baf94955", kill_on_drop: false }`
[INFO] [stdout] ab4ffd39cef96246ac9c39ddb04567146cc220fe8c0dbf2f09f799c5baf94955
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 7c49912493e65cc5f933123a7c89ba89a3b061f2fc3bb990a9f7a0f5ab514415
[INFO] running `Command { std: "docker" "start" "-a" "7c49912493e65cc5f933123a7c89ba89a3b061f2fc3bb990a9f7a0f5ab514415", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.32
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]     Checking num-traits v0.1.40
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking lazy_static v0.2.9
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling either v1.2.0
[INFO] [stderr]    Compiling cc v1.0.1
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]     Checking futures v0.1.16
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking linked-hash-map v0.4.2
[INFO] [stderr]     Checking scoped-tls v0.1.0
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling dtoa v0.4.2
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling scopeguard v0.3.2
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking atomic_box v0.1.1
[INFO] [stderr]    Compiling bitflags v1.0.0
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling khronos_api v1.0.1
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling matches v0.1.6
[INFO] [stderr]    Compiling yansi v0.3.4
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]    Compiling unicode-normalization v0.1.5
[INFO] [stdout] error[E0635]: unknown feature `const_atomic_bool_new`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/yansi-0.3.4/src/lib.rs:1:40
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature="nightly", feature(const_atomic_bool_new))]
[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 E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yansi`
[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" "7c49912493e65cc5f933123a7c89ba89a3b061f2fc3bb990a9f7a0f5ab514415", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c49912493e65cc5f933123a7c89ba89a3b061f2fc3bb990a9f7a0f5ab514415", kill_on_drop: false }`
[INFO] [stdout] 7c49912493e65cc5f933123a7c89ba89a3b061f2fc3bb990a9f7a0f5ab514415