[INFO] fetching crate core-utils 0.1.2...
[INFO] testing core-utils-0.1.2 against 1.49.0 for beta-1.50-1
[INFO] extracting crate core-utils 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate core-utils 0.1.2 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate core-utils 0.1.2
[INFO] finished tweaking crates.io crate core-utils 0.1.2
[INFO] tweaked toml for crates.io crate core-utils 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 90495962f258794382ad75571f342ef8bcfb86f7818c4fa13b054f0ba441136d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "90495962f258794382ad75571f342ef8bcfb86f7818c4fa13b054f0ba441136d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "90495962f258794382ad75571f342ef8bcfb86f7818c4fa13b054f0ba441136d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90495962f258794382ad75571f342ef8bcfb86f7818c4fa13b054f0ba441136d", kill_on_drop: false }`
[INFO] [stdout] 90495962f258794382ad75571f342ef8bcfb86f7818c4fa13b054f0ba441136d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a17c99d46d2567d4dd61142ccd0f735ea1e3ff2a6e1f24a79c779b5bc38bde4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7a17c99d46d2567d4dd61142ccd0f735ea1e3ff2a6e1f24a79c779b5bc38bde4", kill_on_drop: false }`
[INFO] [stderr]    Compiling ansi_term v0.6.3
[INFO] [stderr]    Compiling num_cpus v0.2.13
[INFO] [stderr]    Compiling rpf v0.1.6
[INFO] [stderr]    Compiling pgetopts v0.1.2
[INFO] [stdout] error[E0503]: cannot use `state` because it was mutably borrowed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pgetopts-0.1.2/src/lib.rs:976:33
[INFO] [stdout]     |
[INFO] [stdout] 923 |     let mut machine = |cont: &mut bool, (i, c): (usize, char)| {
[INFO] [stdout]     |                       ---------------------------------------- borrow of `state` occurs here
[INFO] [stdout] ...
[INFO] [stdout] 927 |         state = match (state, whitespace, limit) {
[INFO] [stdout]     |                        ----- borrow occurs due to use of `state` in closure
[INFO] [stdout] ...
[INFO] [stdout] 976 |     while cont && match state { B | C => true, A => false } {
[INFO] [stdout]     |                                 ^ use of borrowed `state`
[INFO] [stdout] 977 |         machine(&mut cont, (fake_i, ' '));
[INFO] [stdout]     |         ------- borrow later used here
[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 E0503`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pgetopts`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "7a17c99d46d2567d4dd61142ccd0f735ea1e3ff2a6e1f24a79c779b5bc38bde4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a17c99d46d2567d4dd61142ccd0f735ea1e3ff2a6e1f24a79c779b5bc38bde4", kill_on_drop: false }`
[INFO] [stdout] 7a17c99d46d2567d4dd61142ccd0f735ea1e3ff2a6e1f24a79c779b5bc38bde4