[INFO] fetching crate thinbox 0.1.4...
[INFO] testing thinbox-0.1.4 against 1.55.0 for beta-1.56-1
[INFO] extracting crate thinbox 0.1.4 into /workspace/builds/worker-59/source
[INFO] validating manifest of crates.io crate thinbox 0.1.4 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 thinbox 0.1.4
[INFO] finished tweaking crates.io crate thinbox 0.1.4
[INFO] tweaked toml for crates.io crate thinbox 0.1.4 written to /workspace/builds/worker-59/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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] 81ae73a0f25b918fd0008efa11bd197e93d0d073404339ffdf1922b68f8272a9
[INFO] running `Command { std: "docker" "start" "-a" "81ae73a0f25b918fd0008efa11bd197e93d0d073404339ffdf1922b68f8272a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81ae73a0f25b918fd0008efa11bd197e93d0d073404339ffdf1922b68f8272a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81ae73a0f25b918fd0008efa11bd197e93d0d073404339ffdf1922b68f8272a9", kill_on_drop: false }`
[INFO] [stdout] 81ae73a0f25b918fd0008efa11bd197e93d0d073404339ffdf1922b68f8272a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-59/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] d43dd190117357ec4b4d31e075378098211417195323e2c4daf75f7e1d9b4a0c
[INFO] running `Command { std: "docker" "start" "-a" "d43dd190117357ec4b4d31e075378098211417195323e2c4daf75f7e1d9b4a0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling thinbox v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `std::raw`
[INFO] [stdout]    --> src/lib.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 | use std::raw::TraitObject;
[INFO] [stdout]     |          ^^^ could not find `raw` in `std`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(raw)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(unsize)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thinbox` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "d43dd190117357ec4b4d31e075378098211417195323e2c4daf75f7e1d9b4a0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d43dd190117357ec4b4d31e075378098211417195323e2c4daf75f7e1d9b4a0c", kill_on_drop: false }`
[INFO] [stdout] d43dd190117357ec4b4d31e075378098211417195323e2c4daf75f7e1d9b4a0c