[INFO] fetching crate dustr 0.1.2...
[INFO] testing dustr-0.1.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate dustr 0.1.2 into /workspace/builds/worker-46/source
[INFO] validating manifest of crates.io crate dustr 0.1.2 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 dustr 0.1.2
[INFO] finished tweaking crates.io crate dustr 0.1.2
[INFO] tweaked toml for crates.io crate dustr 0.1.2 written to /workspace/builds/worker-46/source/Cargo.toml
[INFO] crate crates.io crate dustr 0.1.2 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]  Downloading crates ...
[INFO] [stderr]   Downloaded paste-impl v0.1.18
[INFO] [stderr]   Downloaded indoc v0.3.6
[INFO] [stderr]   Downloaded anyhow v1.0.31
[INFO] [stderr]   Downloaded os_str_bytes v2.3.1
[INFO] [stderr]   Downloaded indexmap v1.4.0
[INFO] [stderr]   Downloaded hermit-abi v0.1.14
[INFO] [stderr]   Downloaded cargo_toml v0.8.0
[INFO] [stderr]   Downloaded proc-macro-error-attr v0.4.12
[INFO] [stderr]   Downloaded unindent v0.1.6
[INFO] [stderr]   Downloaded indoc-impl v0.3.6
[INFO] [stderr]   Downloaded proc-macro-error v0.4.12
[INFO] [stderr]   Downloaded ffishim v0.1.2
[INFO] [stderr]   Downloaded clap_derive v3.0.0-beta.1
[INFO] [stderr]   Downloaded once_cell v1.4.0
[INFO] [stderr]   Downloaded clap v3.0.0-beta.1
[INFO] [stderr]   Downloaded paste v0.1.18
[INFO] [stderr]   Downloaded proc-macro-hack v0.5.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] b9a3c64e7c0c2bd31cf4b7c6144c0e8ca797a2edb6d27e733811af4c780f4d85
[INFO] running `Command { std: "docker" "start" "-a" "b9a3c64e7c0c2bd31cf4b7c6144c0e8ca797a2edb6d27e733811af4c780f4d85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9a3c64e7c0c2bd31cf4b7c6144c0e8ca797a2edb6d27e733811af4c780f4d85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9a3c64e7c0c2bd31cf4b7c6144c0e8ca797a2edb6d27e733811af4c780f4d85", kill_on_drop: false }`
[INFO] [stdout] b9a3c64e7c0c2bd31cf4b7c6144c0e8ca797a2edb6d27e733811af4c780f4d85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] 15a1ca36f4df7ad2d37ab6e3f834d3624a7817333402bc81a3106b57f9d0fb5b
[INFO] running `Command { std: "docker" "start" "-a" "15a1ca36f4df7ad2d37ab6e3f834d3624a7817333402bc81a3106b57f9d0fb5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling anyhow v1.0.31
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling linked-hash-map v0.5.3
[INFO] [stderr]    Compiling unindent v0.1.6
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling dtoa v0.4.6
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling os_str_bytes v2.3.1
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling indexmap v1.4.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]    Compiling paste v0.1.18
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling serde_yaml v0.8.13
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling indoc v0.3.6
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.1
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling ffishim v0.1.2
[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/ffishim-0.1.2/src/lib.rs:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(vec_into_raw_parts)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ffishim` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "15a1ca36f4df7ad2d37ab6e3f834d3624a7817333402bc81a3106b57f9d0fb5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15a1ca36f4df7ad2d37ab6e3f834d3624a7817333402bc81a3106b57f9d0fb5b", kill_on_drop: false }`
[INFO] [stdout] 15a1ca36f4df7ad2d37ab6e3f834d3624a7817333402bc81a3106b57f9d0fb5b