[INFO] updating cached repository https://github.com/sammartin51/gamma
[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] 8b9af73f8d8b518784dd9ca0b4a73b61eee9e040
[INFO] testing sammartin51/gamma against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsammartin51%2Fgamma" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sammartin51/gamma on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/sammartin51/gamma
[INFO] finished tweaking git repo https://github.com/sammartin51/gamma
[INFO] tweaked toml for git repo https://github.com/sammartin51/gamma written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/sammartin51/gamma already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 08d2ab9eab4c5b8a8dfed50296de4c9b28996c26e431f1ca933af7dcdb386924
[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" "08d2ab9eab4c5b8a8dfed50296de4c9b28996c26e431f1ca933af7dcdb386924"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling text_io v0.1.6
[INFO] [stderr]    Compiling num-integer v0.1.34
[INFO] [stderr]    Compiling num-iter v0.1.33
[INFO] [stderr]    Compiling num v0.1.37
[INFO] [stderr]    Compiling time v0.1.37
[INFO] [stderr]    Compiling chrono v0.3.1
[INFO] [stderr]    Compiling hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/main.rs:44:18
[INFO] [stderr]    |
[INFO] [stderr] 44 |             _ => println!("try again")
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^ expected struct `tree::NodeZipper`, found `()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected struct `tree::NodeZipper<task::Task>`
[INFO] [stderr]            found unit type `()`
[INFO] [stderr]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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 `hello_world`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "08d2ab9eab4c5b8a8dfed50296de4c9b28996c26e431f1ca933af7dcdb386924"`
[INFO] running `"docker" "rm" "-f" "08d2ab9eab4c5b8a8dfed50296de4c9b28996c26e431f1ca933af7dcdb386924"`
[INFO] [stdout] 08d2ab9eab4c5b8a8dfed50296de4c9b28996c26e431f1ca933af7dcdb386924