[INFO] updating cached repository johanullen/hashcode2019_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/johanullen/hashcode2019_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/johanullen/hashcode2019_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/johanullen/hashcode2019_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/johanullen/hashcode2019_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/johanullen/hashcode2019_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johanullen/hashcode2019_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johanullen/hashcode2019_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5961fb7544219ca529c40e3a650cec31c765a9d6
[INFO] sha for GitHub repo johanullen/hashcode2019_rust: 5961fb7544219ca529c40e3a650cec31c765a9d6
[INFO] validating manifest of johanullen/hashcode2019_rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of johanullen/hashcode2019_rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing johanullen/hashcode2019_rust
[INFO] finished frobbing johanullen/hashcode2019_rust
[INFO] frobbed toml for johanullen/hashcode2019_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/johanullen/hashcode2019_rust/Cargo.toml
[INFO] started frobbing johanullen/hashcode2019_rust
[INFO] finished frobbing johanullen/hashcode2019_rust
[INFO] frobbed toml for johanullen/hashcode2019_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johanullen/hashcode2019_rust/Cargo.toml
[INFO] crate johanullen/hashcode2019_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing johanullen/hashcode2019_rust against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/johanullen/hashcode2019_rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 286737bcf8d77af97ec5b2edfb68c4b39867c96f45fa9fc520d4a57afb5912e2
[INFO] running `"docker" "start" "-a" "286737bcf8d77af97ec5b2edfb68c4b39867c96f45fa9fc520d4a57afb5912e2"`
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling hashcode2019 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(optin_builtin_traits)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(thread_spawn_unchecked)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:16:18
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn run_alg(alg: &Fn(&Pics) -> Pics, pics: &Pics, name: &str, print_pics: bool) -> Pics {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Pics) -> Pics`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `hashcode2019`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "286737bcf8d77af97ec5b2edfb68c4b39867c96f45fa9fc520d4a57afb5912e2"`
[INFO] running `"docker" "rm" "-f" "286737bcf8d77af97ec5b2edfb68c4b39867c96f45fa9fc520d4a57afb5912e2"`
[INFO] [stdout] 286737bcf8d77af97ec5b2edfb68c4b39867c96f45fa9fc520d4a57afb5912e2