[INFO] fetching crate tsukuyomi-macros 0.5.2...
[INFO] checking tsukuyomi-macros-0.5.2 against beta for pr-78714
[INFO] extracting crate tsukuyomi-macros 0.5.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate tsukuyomi-macros 0.5.2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tsukuyomi-macros 0.5.2
[INFO] finished tweaking crates.io crate tsukuyomi-macros 0.5.2
[INFO] tweaked toml for crates.io crate tsukuyomi-macros 0.5.2 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 925070d0f342a0b383f31de2d6342154d661d3a80729ea9423c690e89f82cdf6
[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" "925070d0f342a0b383f31de2d6342154d661d3a80729ea9423c690e89f82cdf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "925070d0f342a0b383f31de2d6342154d661d3a80729ea9423c690e89f82cdf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "925070d0f342a0b383f31de2d6342154d661d3a80729ea9423c690e89f82cdf6", kill_on_drop: false }`
[INFO] [stdout] 925070d0f342a0b383f31de2d6342154d661d3a80729ea9423c690e89f82cdf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30879d090b93bccdc8a918332873f2499e19411ef85f74664eebd8f9df6c5897
[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" "30879d090b93bccdc8a918332873f2499e19411ef85f74664eebd8f9df6c5897", kill_on_drop: false }`
[INFO] [stderr]     Checking tower-service v0.2.0
[INFO] [stderr]     Checking cookie v0.11.3
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]    Compiling tsukuyomi-macros v0.5.2
[INFO] [stderr]     Checking serde_plain v0.3.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tsukuyomi-service v0.1.0
[INFO] [stderr]     Checking hyper v0.12.35
[INFO] [stderr]     Checking tsukuyomi v0.5.3
[INFO] [stderr]     Checking tsukuyomi-macros v0.5.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: unused extern crate
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate proc_macro;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stdout]   |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/lib.rs:4:71
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![deny(nonstandard_style, rust_2018_idioms, rust_2018_compatibility, unused)]
[INFO] [stdout]   |                                                                       ^^^^^^
[INFO] [stdout]   = note: `#[deny(unused_extern_crates)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tsukuyomi-macros`
[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" "30879d090b93bccdc8a918332873f2499e19411ef85f74664eebd8f9df6c5897", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30879d090b93bccdc8a918332873f2499e19411ef85f74664eebd8f9df6c5897", kill_on_drop: false }`
[INFO] [stdout] 30879d090b93bccdc8a918332873f2499e19411ef85f74664eebd8f9df6c5897