[INFO] cloning repository https://github.com/gefjon/saturn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gefjon/saturn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgefjon%2Fsaturn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgefjon%2Fsaturn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 58be514360ff5bd5ef8bdae03364e2ee1f377682
[INFO] testing gefjon/saturn against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgefjon%2Fsaturn" "/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/gefjon/saturn on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-54/source/.cargo/config
[INFO] started tweaking git repo https://github.com/gefjon/saturn
[INFO] finished tweaking git repo https://github.com/gefjon/saturn
[INFO] tweaked toml for git repo https://github.com/gefjon/saturn written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] crate git repo https://github.com/gefjon/saturn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tock-registers v0.5.0
[INFO] [stderr]   Downloaded r0 v1.0.0
[INFO] [stderr]   Downloaded cortex-a v3.0.5
[INFO] [stderr]   Downloaded register v0.5.1
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cac7ea138918c183379990919270942c41b6db5a805d8d832c7156bf83134e55
[INFO] running `Command { std: "docker" "start" "-a" "cac7ea138918c183379990919270942c41b6db5a805d8d832c7156bf83134e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cac7ea138918c183379990919270942c41b6db5a805d8d832c7156bf83134e55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cac7ea138918c183379990919270942c41b6db5a805d8d832c7156bf83134e55", kill_on_drop: false }`
[INFO] [stdout] cac7ea138918c183379990919270942c41b6db5a805d8d832c7156bf83134e55
[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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee2c037fe82f3797a3ddea8483eeac7ad690f99e1c87b7cacd48287015cd89f0
[INFO] running `Command { std: "docker" "start" "-a" "ee2c037fe82f3797a3ddea8483eeac7ad690f99e1c87b7cacd48287015cd89f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling tock-registers v0.5.0
[INFO] [stderr]    Compiling spin v0.7.0
[INFO] [stderr]    Compiling r0 v1.0.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tock-registers-0.5.0/src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tock-registers-0.5.0/src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tock-registers`
[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" "ee2c037fe82f3797a3ddea8483eeac7ad690f99e1c87b7cacd48287015cd89f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee2c037fe82f3797a3ddea8483eeac7ad690f99e1c87b7cacd48287015cd89f0", kill_on_drop: false }`
[INFO] [stdout] ee2c037fe82f3797a3ddea8483eeac7ad690f99e1c87b7cacd48287015cd89f0
