[INFO] fetching crate xhook-rs 0.2.0...
[INFO] testing xhook-rs-0.2.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate xhook-rs 0.2.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate xhook-rs 0.2.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xhook-rs 0.2.0
[INFO] finished tweaking crates.io crate xhook-rs 0.2.0
[INFO] tweaked toml for crates.io crate xhook-rs 0.2.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate xhook-rs 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb09eb29eccf532c75ef6e0834cc110cf6af613c984a597a7d8aa98c06e575f6
[INFO] running `Command { std: "docker" "start" "-a" "eb09eb29eccf532c75ef6e0834cc110cf6af613c984a597a7d8aa98c06e575f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb09eb29eccf532c75ef6e0834cc110cf6af613c984a597a7d8aa98c06e575f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb09eb29eccf532c75ef6e0834cc110cf6af613c984a597a7d8aa98c06e575f6", kill_on_drop: false }`
[INFO] [stdout] eb09eb29eccf532c75ef6e0834cc110cf6af613c984a597a7d8aa98c06e575f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebf1e6b6d9289ca4dbcb195f30129f42636deeae5c3b98e3325f3bb3d879c0c7
[INFO] running `Command { std: "docker" "start" "-a" "ebf1e6b6d9289ca4dbcb195f30129f42636deeae5c3b98e3325f3bb3d879c0c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling xhook-sys v0.2.0
[INFO] [stderr]    Compiling xhook-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.66s
[INFO] running `Command { std: "docker" "inspect" "ebf1e6b6d9289ca4dbcb195f30129f42636deeae5c3b98e3325f3bb3d879c0c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebf1e6b6d9289ca4dbcb195f30129f42636deeae5c3b98e3325f3bb3d879c0c7", kill_on_drop: false }`
[INFO] [stdout] ebf1e6b6d9289ca4dbcb195f30129f42636deeae5c3b98e3325f3bb3d879c0c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] baddf4781872546a1e845402097063e60241e6f2db05d6df14cb30af459c4408
[INFO] running `Command { std: "docker" "start" "-a" "baddf4781872546a1e845402097063e60241e6f2db05d6df14cb30af459c4408", kill_on_drop: false }`
[INFO] [stderr]    Compiling xhook-rs v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(c_variadic)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice`
[INFO] [stdout]  --> examples/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::slice;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xhook-rs` due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "baddf4781872546a1e845402097063e60241e6f2db05d6df14cb30af459c4408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baddf4781872546a1e845402097063e60241e6f2db05d6df14cb30af459c4408", kill_on_drop: false }`
[INFO] [stdout] baddf4781872546a1e845402097063e60241e6f2db05d6df14cb30af459c4408