[INFO] updating cached repository https://github.com/porglezomp-misc/flapjack-fwop-solver
[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] 01fe0aa72721958a406f7475f1afcba0c21feb7d
[INFO] testing porglezomp-misc/flapjack-fwop-solver against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fporglezomp-misc%2Fflapjack-fwop-solver" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/porglezomp-misc/flapjack-fwop-solver on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/porglezomp-misc/flapjack-fwop-solver
[INFO] disabled cargo feature 'default-run' from git repo https://github.com/porglezomp-misc/flapjack-fwop-solver
[INFO] finished tweaking git repo https://github.com/porglezomp-misc/flapjack-fwop-solver
[INFO] tweaked toml for git repo https://github.com/porglezomp-misc/flapjack-fwop-solver written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/porglezomp-misc/flapjack-fwop-solver already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] 615db03b5b50f7988720f7c577c48b9ac14e6276c3a57f592ca42be907f8906d
[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" "615db03b5b50f7988720f7c577c48b9ac14e6276c3a57f592ca42be907f8906d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling fwop v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/bin/solve.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(duration_float)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_float_secs` found for struct `std::time::Duration` in the current scope
[INFO] [stderr]   --> src/bin/solve.rs:41:29
[INFO] [stderr]    |
[INFO] [stderr] 41 |         (write_end - start).as_float_secs()
[INFO] [stderr]    |                             ^^^^^^^^^^^^^ method not found in `std::time::Duration`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_float_secs` found for struct `std::time::Duration` in the current scope
[INFO] [stderr]   --> src/bin/solve.rs:45:44
[INFO] [stderr]    |
[INFO] [stderr] 45 |         generate_end.duration_since(start).as_float_secs()
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^ method not found in `std::time::Duration`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `as_float_secs` found for struct `std::time::Duration` in the current scope
[INFO] [stderr]   --> src/bin/solve.rs:49:48
[INFO] [stderr]    |
[INFO] [stderr] 49 |         write_end.duration_since(generate_end).as_float_secs()
[INFO] [stderr]    |                                                ^^^^^^^^^^^^^ method not found in `std::time::Duration`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0554, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `fwop`.
[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: build failed
[INFO] running `"docker" "inspect" "615db03b5b50f7988720f7c577c48b9ac14e6276c3a57f592ca42be907f8906d"`
[INFO] running `"docker" "rm" "-f" "615db03b5b50f7988720f7c577c48b9ac14e6276c3a57f592ca42be907f8906d"`
[INFO] [stdout] 615db03b5b50f7988720f7c577c48b9ac14e6276c3a57f592ca42be907f8906d