[INFO] crate semverver 0.1.44 is already in cache
[INFO] checking semverver-0.1.44 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate semverver 0.1.44 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate semverver 0.1.44 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate semverver 0.1.44
[INFO] finished tweaking crates.io crate semverver 0.1.44
[INFO] tweaked toml for crates.io crate semverver 0.1.44 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate semverver 0.1.44 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e314aabf3babdb822274db56fb9021a3b47a72a53fe3eef9f0b7e6dfbde52479
[INFO] running `"docker" "start" "-a" "e314aabf3babdb822274db56fb9021a3b47a72a53fe3eef9f0b7e6dfbde52479"`
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]     Checking opener v0.4.1
[INFO] [stderr]    Compiling semverver v0.1.44 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling libssh2-sys v0.2.13
[INFO] [stderr]    Compiling libgit2-sys v0.8.2
[INFO] [stderr]     Checking filetime v0.2.7
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking jobserver v0.1.17
[INFO] [stderr]     Checking flate2 v1.0.12
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking crypto-hash v0.3.4
[INFO] [stderr]     Checking tar v0.4.26
[INFO] [stderr]     Checking quickcheck v0.9.0
[INFO] [stderr]    Compiling synstructure v0.12.2
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking serde v1.0.102
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking serde_ignored v0.0.4
[INFO] [stderr]     Checking toml v0.5.5
[INFO] [stderr]     Checking url_serde v0.2.0
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking crates-io v0.27.0
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling im-rc v13.0.0
[INFO] [stderr]     Checking git2 v0.9.2
[INFO] [stderr]     Checking git2-curl v0.10.1
[INFO] [stderr]     Checking cargo v0.39.0
[INFO] [stderr] error[E0463]: can't find crate for `rustc`
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | extern crate rustc;
[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[E0463]: can't find crate for `rustc`
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | extern crate rustc;
[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 `semverver`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `semverver`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e314aabf3babdb822274db56fb9021a3b47a72a53fe3eef9f0b7e6dfbde52479"`
[INFO] running `"docker" "rm" "-f" "e314aabf3babdb822274db56fb9021a3b47a72a53fe3eef9f0b7e6dfbde52479"`
[INFO] [stdout] e314aabf3babdb822274db56fb9021a3b47a72a53fe3eef9f0b7e6dfbde52479