[INFO] fetching crate pressurize 0.0.1...
[INFO] testing pressurize-0.0.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate pressurize 0.0.1 into /workspace/builds/worker-32/source
[INFO] validating manifest of crates.io crate pressurize 0.0.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pressurize 0.0.1
[INFO] finished tweaking crates.io crate pressurize 0.0.1
[INFO] tweaked toml for crates.io crate pressurize 0.0.1 written to /workspace/builds/worker-32/source/Cargo.toml
[INFO] crate crates.io crate pressurize 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded perf-event-open-sys v1.0.1
[INFO] [stderr]   Downloaded ctrlc v3.1.8
[INFO] [stderr]   Downloaded anyhow v1.0.40
[INFO] [stderr]   Downloaded dogstatsd v0.6.2
[INFO] [stderr]   Downloaded bcc v0.0.31
[INFO] [stderr]   Downloaded bcc-sys v0.18.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3690f3153456bf0722f6e3da161bdbb8d0a787fc64f699296dd434b1c036c0f9
[INFO] running `Command { std: "docker" "start" "-a" "3690f3153456bf0722f6e3da161bdbb8d0a787fc64f699296dd434b1c036c0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3690f3153456bf0722f6e3da161bdbb8d0a787fc64f699296dd434b1c036c0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3690f3153456bf0722f6e3da161bdbb8d0a787fc64f699296dd434b1c036c0f9", kill_on_drop: false }`
[INFO] [stdout] 3690f3153456bf0722f6e3da161bdbb8d0a787fc64f699296dd434b1c036c0f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-32/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0f55522e99965efcfc92433b1b78bcad532a23ef8f6756f72eaa609f233db06
[INFO] running `Command { std: "docker" "start" "-a" "c0f55522e99965efcfc92433b1b78bcad532a23ef8f6756f72eaa609f233db06", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.68
[INFO] [stderr]    Compiling bcc-sys v0.18.0
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling perf-event-open-sys v1.0.1
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling dogstatsd v0.6.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling bcc v0.0.31
[INFO] [stderr]    Compiling ctrlc v3.1.8
[INFO] [stderr]    Compiling pressurize v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `error`, `info`
[INFO] [stdout]    --> src/counters/mod.rs:114:11
[INFO] [stdout]     |
[INFO] [stdout] 114 | use log::{error, info};
[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 `pressurize` 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" "c0f55522e99965efcfc92433b1b78bcad532a23ef8f6756f72eaa609f233db06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0f55522e99965efcfc92433b1b78bcad532a23ef8f6756f72eaa609f233db06", kill_on_drop: false }`
[INFO] [stdout] c0f55522e99965efcfc92433b1b78bcad532a23ef8f6756f72eaa609f233db06