[INFO] fetching crate semververfork 0.1.55...
[INFO] checking semververfork-0.1.55 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate semververfork 0.1.55 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate semververfork 0.1.55 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate semververfork 0.1.55
[INFO] finished tweaking crates.io crate semververfork 0.1.55
[INFO] tweaked toml for crates.io crate semververfork 0.1.55 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate semververfork 0.1.55 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3d3e7c81bd368495fc7b42b67aaade0ffe2429fec05ffccea72066085c9439b2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3d3e7c81bd368495fc7b42b67aaade0ffe2429fec05ffccea72066085c9439b2"`
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]     Checking humantime v2.0.0
[INFO] [stderr]    Compiling semververfork v0.1.55 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking filetime v0.2.9
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking jobserver v0.1.21
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling openssl-sys v0.9.55
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.3
[INFO] [stderr]    Compiling curl-sys v0.4.30+curl-7.69.1
[INFO] [stderr]    Compiling libgit2-sys v0.10.0
[INFO] [stderr]     Checking tar v0.4.26
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking cargo-platform v0.1.1
[INFO] [stderr]     Checking serde_ignored v0.1.1
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking quickcheck v0.9.2
[INFO] [stderr]     Checking flate2 v1.0.14
[INFO] [stderr]    Compiling libssh2-sys v0.2.16
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]     Checking rustfix v0.5.1
[INFO] [stderr]     Checking sized-chunks v0.5.3
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]    Compiling curl v0.4.28
[INFO] [stderr]     Checking crates-io v0.31.0
[INFO] [stderr]     Checking git2 v0.11.0
[INFO] [stderr]     Checking git2-curl v0.12.0
[INFO] [stderr]     Checking cargo v0.43.1
[INFO] [stderr] error[E0463]: can't find crate for `rustc_ast`
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | extern crate rustc_ast;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `semververfork`.
[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[E0463]: can't find crate for `rustc_ast`
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | extern crate rustc_ast;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `semververfork`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3d3e7c81bd368495fc7b42b67aaade0ffe2429fec05ffccea72066085c9439b2"`
[INFO] running `"docker" "rm" "-f" "3d3e7c81bd368495fc7b42b67aaade0ffe2429fec05ffccea72066085c9439b2"`
[INFO] [stdout] 3d3e7c81bd368495fc7b42b67aaade0ffe2429fec05ffccea72066085c9439b2