[INFO] cloning repository https://github.com/charliesome/fieldwise
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/charliesome/fieldwise" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharliesome%2Ffieldwise", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharliesome%2Ffieldwise'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f744d9a90a9515bc681b996142eb41427d5f30a
[INFO] testing charliesome/fieldwise against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharliesome%2Ffieldwise" "/workspace/builds/worker-54/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-54/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/charliesome/fieldwise 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 git repo https://github.com/charliesome/fieldwise
[INFO] finished tweaking git repo https://github.com/charliesome/fieldwise
[INFO] tweaked toml for git repo https://github.com/charliesome/fieldwise written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] crate git repo https://github.com/charliesome/fieldwise 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] ca0815ff810c041c06d48b62ac520ef05b91fb0ab0a3e1e8443fb4f2ad805e25
[INFO] running `Command { std: "docker" "start" "-a" "ca0815ff810c041c06d48b62ac520ef05b91fb0ab0a3e1e8443fb4f2ad805e25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca0815ff810c041c06d48b62ac520ef05b91fb0ab0a3e1e8443fb4f2ad805e25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca0815ff810c041c06d48b62ac520ef05b91fb0ab0a3e1e8443fb4f2ad805e25", kill_on_drop: false }`
[INFO] [stdout] ca0815ff810c041c06d48b62ac520ef05b91fb0ab0a3e1e8443fb4f2ad805e25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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] ff6d6c2f987623605434a11d5eb7c8cb3351f30f6207f103e2ccd106c06a722f
[INFO] running `Command { std: "docker" "start" "-a" "ff6d6c2f987623605434a11d5eb7c8cb3351f30f6207f103e2ccd106c06a722f", kill_on_drop: false }`
[INFO] [stderr]    Compiling fieldwise v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "ff6d6c2f987623605434a11d5eb7c8cb3351f30f6207f103e2ccd106c06a722f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff6d6c2f987623605434a11d5eb7c8cb3351f30f6207f103e2ccd106c06a722f", kill_on_drop: false }`
[INFO] [stdout] ff6d6c2f987623605434a11d5eb7c8cb3351f30f6207f103e2ccd106c06a722f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7674201695c910834bdf98bafb9954911be4e04a2b17ee070141aebd584dbd37
[INFO] running `Command { std: "docker" "start" "-a" "7674201695c910834bdf98bafb9954911be4e04a2b17ee070141aebd584dbd37", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling fieldwise_derive v0.0.0 (/opt/rustwide/workdir/fieldwise_derive)
[INFO] [stderr]    Compiling fieldwise v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> examples/simple.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Fieldwise`
[INFO] [stdout]  --> examples/simple.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use fieldwise::{Fieldwise, Path};
[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 `fieldwise` 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" "7674201695c910834bdf98bafb9954911be4e04a2b17ee070141aebd584dbd37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7674201695c910834bdf98bafb9954911be4e04a2b17ee070141aebd584dbd37", kill_on_drop: false }`
[INFO] [stdout] 7674201695c910834bdf98bafb9954911be4e04a2b17ee070141aebd584dbd37