[INFO] updating cached repository https://github.com/jsanders/rust-bignum
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3fdf3dc4e0429afd7b8322395690b0f7d41106cb
[INFO] checking jsanders/rust-bignum against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjsanders%2Frust-bignum" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jsanders/rust-bignum on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jsanders/rust-bignum
[INFO] removed path dependency rust-gmp from git repo https://github.com/jsanders/rust-bignum
[INFO] finished tweaking git repo https://github.com/jsanders/rust-bignum
[INFO] tweaked toml for git repo https://github.com/jsanders/rust-bignum written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/jsanders/rust-bignum 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] warning: dependency (rust-gmp) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-0/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Updating git repository `https://github.com/rust-lang/num`
[INFO] [stderr]     Updating git repository `https://github.com/rust-num/num-bigint`
[INFO] [stderr]     Updating git repository `https://github.com/rust-num/num-complex`
[INFO] [stderr]     Updating git repository `https://github.com/rust-num/num-rational`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: dependency (rust-gmp) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6503100deefeb977de7321a9c3db109d660c78392f85d417b3dd5c9cf1cc0feb
[INFO] running `"docker" "start" "-a" "6503100deefeb977de7321a9c3db109d660c78392f85d417b3dd5c9cf1cc0feb"`
[INFO] [stderr] warning: dependency (rust-gmp) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.3.0-pre (https://github.com/rust-num/num-bigint#b3a21a06)
[INFO] [stderr]    Compiling num-rational v0.3.0-pre (https://github.com/rust-num/num-rational#07112ea0)
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.3.0-pre (https://github.com/rust-num/num-complex#7fb4f1c0)
[INFO] [stderr]     Checking rust-gmp v0.5.0
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]     --> /opt/rustwide/cargo-home/git/checkouts/num-rational-0a9266d4393b8dc6/07112ea/src/lib.rs:1473:9
[INFO] [stderr]      |
[INFO] [stderr] 1472 |     fn bits(&self) -> usize {
[INFO] [stderr]      |                       ----- expected `usize` because of return type
[INFO] [stderr] 1473 |         self.bits()
[INFO] [stderr]      |         ^^^^^^^^^^^ expected `usize`, found `u64`
[INFO] [stderr]      |
[INFO] [stderr] help: you can convert an `u64` to `usize` and panic if the converted value wouldn't fit
[INFO] [stderr]      |
[INFO] [stderr] 1473 |         self.bits().try_into().unwrap()
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `num-rational`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6503100deefeb977de7321a9c3db109d660c78392f85d417b3dd5c9cf1cc0feb"`
[INFO] running `"docker" "rm" "-f" "6503100deefeb977de7321a9c3db109d660c78392f85d417b3dd5c9cf1cc0feb"`
[INFO] [stdout] 6503100deefeb977de7321a9c3db109d660c78392f85d417b3dd5c9cf1cc0feb