[INFO] cloning repository https://github.com/matthiaskrgr/cargo-rebuild-check
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/matthiaskrgr/cargo-rebuild-check" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiaskrgr%2Fcargo-rebuild-check", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiaskrgr%2Fcargo-rebuild-check'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d54fa01899ab0b14fd29fa0e585e8b1bad9bfefa
[INFO] testing matthiaskrgr/cargo-rebuild-check against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmatthiaskrgr%2Fcargo-rebuild-check" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/matthiaskrgr/cargo-rebuild-check on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/matthiaskrgr/cargo-rebuild-check
[INFO] finished tweaking git repo https://github.com/matthiaskrgr/cargo-rebuild-check
[INFO] tweaked toml for git repo https://github.com/matthiaskrgr/cargo-rebuild-check written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/matthiaskrgr/cargo-rebuild-check already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[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 home v0.3.3
[INFO] [stderr]   Downloaded commoncrypto v0.2.0
[INFO] [stderr]   Downloaded shell-escape v0.1.4
[INFO] [stderr]   Downloaded commoncrypto-sys v0.2.0
[INFO] [stderr]   Downloaded socket2 v0.3.7
[INFO] [stderr]   Downloaded globset v0.4.0
[INFO] [stderr]   Downloaded jobserver v0.1.11
[INFO] [stderr]   Downloaded miow v0.3.1
[INFO] [stderr]   Downloaded serde_ignored v0.0.4
[INFO] [stderr]   Downloaded filetime v0.2.1
[INFO] [stderr]   Downloaded tar v0.4.16
[INFO] [stderr]   Downloaded openssl v0.10.10
[INFO] [stderr]   Downloaded crypto-hash v0.3.1
[INFO] [stderr]   Downloaded crates-io v0.16.0
[INFO] [stderr]   Downloaded git2-curl v0.8.1
[INFO] [stderr]   Downloaded ignore v0.4.2
[INFO] [stderr]   Downloaded curl v0.4.12
[INFO] [stderr]   Downloaded git2 v0.7.2
[INFO] [stderr]   Downloaded libssh2-sys v0.2.8
[INFO] [stderr]   Downloaded cargo v0.28.0
[INFO] [stderr]   Downloaded libgit2-sys v0.7.5
[INFO] [stderr]   Downloaded curl-sys v0.4.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cd6050300f8bd29259a3ee1775ceeb06d1e48901134fd746558ce7c66fffe283
[INFO] running `Command { std: "docker" "start" "-a" "cd6050300f8bd29259a3ee1775ceeb06d1e48901134fd746558ce7c66fffe283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd6050300f8bd29259a3ee1775ceeb06d1e48901134fd746558ce7c66fffe283", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd6050300f8bd29259a3ee1775ceeb06d1e48901134fd746558ce7c66fffe283", kill_on_drop: false }`
[INFO] [stdout] cd6050300f8bd29259a3ee1775ceeb06d1e48901134fd746558ce7c66fffe283
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7eacc8ac3be42890112c8a87044c9e5371dc5dea6dbdaa5a2746b108a4c73499
[INFO] running `Command { std: "docker" "start" "-a" "7eacc8ac3be42890112c8a87044c9e5371dc5dea6dbdaa5a2746b108a4c73499", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `edition` has been stabilized in the 1.31 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/manifest.html#the-edition-field for more information about using this feature.
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling pkg-config v0.3.12
[INFO] [stderr]    Compiling cfg-if v0.1.4
[INFO] [stderr]    Compiling lazy_static v1.0.2
[INFO] [stderr]    Compiling serde v1.0.70
[INFO] [stderr]    Compiling matches v0.1.7
[INFO] [stderr]    Compiling openssl v0.10.10
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling rayon v1.0.2
[INFO] [stderr]    Compiling crossbeam v0.3.2
[INFO] [stderr]    Compiling shell-escape v0.1.4
[INFO] [stderr]    Compiling home v0.3.3
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.8
[INFO] [stderr]    Compiling regex-syntax v0.6.2
[INFO] [stderr]    Compiling humantime v1.1.1
[INFO] [stderr]    Compiling walkdir v2.1.4
[INFO] [stderr]    Compiling aho-corasick v0.6.6
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling socket2 v0.3.7
[INFO] [stderr]    Compiling filetime v0.2.1
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling tempfile v3.0.3
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling jobserver v0.1.11
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling tar v0.4.16
[INFO] [stderr]    Compiling syn v0.14.4
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.33
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling curl-sys v0.4.6
[INFO] [stderr]    Compiling libssh2-sys v0.2.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling libgit2-sys v0.7.5
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling url v1.7.1
[INFO] [stderr]    Compiling globset v0.4.0
[INFO] [stderr]    Compiling ignore v0.4.2
[INFO] [stderr]    Compiling flate2 v1.0.1
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling env_logger v0.5.10
[INFO] [stderr]    Compiling crypto-hash v0.3.1
[INFO] [stderr]    Compiling serde_derive v1.0.70
[INFO] [stderr]    Compiling serde_json v1.0.24
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling serde_ignored v0.0.4
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling curl v0.4.12
[INFO] [stderr]    Compiling crates-io v0.16.0
[INFO] [stderr]    Compiling git2 v0.7.2
[INFO] [stderr]    Compiling git2-curl v0.8.1
[INFO] [stderr]    Compiling cargo v0.28.0
[INFO] [stderr]    Compiling cargo-rebuild-check v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning[E0705]: the feature `rust_2018_preview` is included in the Rust 2018 edition
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview, use_extern_macros)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(rust_2018_preview, use_extern_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `use_extern_macros` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0705.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-rebuild-check` due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "7eacc8ac3be42890112c8a87044c9e5371dc5dea6dbdaa5a2746b108a4c73499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7eacc8ac3be42890112c8a87044c9e5371dc5dea6dbdaa5a2746b108a4c73499", kill_on_drop: false }`
[INFO] [stdout] 7eacc8ac3be42890112c8a87044c9e5371dc5dea6dbdaa5a2746b108a4c73499