[INFO] crate libosu 0.0.7 is already in cache
[INFO] extracting crate libosu 0.0.7 into work/ex/beta-1.37-6/sources/1.36.0/reg/libosu/0.0.7
[INFO] extracting crate libosu 0.0.7 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/libosu/0.0.7
[INFO] validating manifest of libosu-0.0.7 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of libosu-0.0.7 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing libosu-0.0.7
[INFO] finished frobbing libosu-0.0.7
[INFO] frobbed toml for libosu-0.0.7 written to work/ex/beta-1.37-6/sources/1.36.0/reg/libosu/0.0.7/Cargo.toml
[INFO] started frobbing libosu-0.0.7
[INFO] finished frobbing libosu-0.0.7
[INFO] frobbed toml for libosu-0.0.7 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/libosu/0.0.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing libosu-0.0.7 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/libosu/0.0.7:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] d18d0946a256ed54ec32e33c7a0fc6398f2d430524a2db2112215c4e5dff4a9b
[INFO] running `"docker" "start" "-a" "d18d0946a256ed54ec32e33c7a0fc6398f2d430524a2db2112215c4e5dff4a9b"`
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling libosu v0.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/beatmap.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |         for mut hit_object in self.hit_objects.iter() {
[INFO] [stderr]     |             ----^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.74s
[INFO] running `"docker" "inspect" "d18d0946a256ed54ec32e33c7a0fc6398f2d430524a2db2112215c4e5dff4a9b"`
[INFO] running `"docker" "rm" "-f" "d18d0946a256ed54ec32e33c7a0fc6398f2d430524a2db2112215c4e5dff4a9b"`
[INFO] [stdout] d18d0946a256ed54ec32e33c7a0fc6398f2d430524a2db2112215c4e5dff4a9b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/libosu/0.0.7:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 35c8f4e33e2919fda44ec077e1edfc2f60c1e844669ba91e6879be7de5f365da
[INFO] running `"docker" "start" "-a" "35c8f4e33e2919fda44ec077e1edfc2f60c1e844669ba91e6879be7de5f365da"`
[INFO] [stderr]    Compiling libosu v0.0.7 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> tests/test_serde.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{Read, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/beatmap.rs:195:13
[INFO] [stderr]     |
[INFO] [stderr] 195 |         for mut hit_object in self.hit_objects.iter() {
[INFO] [stderr]     |             ----^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.78s
[INFO] running `"docker" "inspect" "35c8f4e33e2919fda44ec077e1edfc2f60c1e844669ba91e6879be7de5f365da"`
[INFO] running `"docker" "rm" "-f" "35c8f4e33e2919fda44ec077e1edfc2f60c1e844669ba91e6879be7de5f365da"`
[INFO] [stdout] 35c8f4e33e2919fda44ec077e1edfc2f60c1e844669ba91e6879be7de5f365da
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/libosu/0.0.7:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 47d7f523b7b213e861c27a8f8f874abfe5e1b7a89938a295937ae608b427744e
[INFO] running `"docker" "start" "-a" "47d7f523b7b213e861c27a8f8f874abfe5e1b7a89938a295937ae608b427744e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/libosu-6ae3fa66817d1dd5
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/test_serde-e920e2816aa5b6f5
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_parser_804683 ... ok
[INFO] [stdout] test test_parser_774965 ... ok
[INFO] [stderr]    Doc-tests libosu
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "47d7f523b7b213e861c27a8f8f874abfe5e1b7a89938a295937ae608b427744e"`
[INFO] running `"docker" "rm" "-f" "47d7f523b7b213e861c27a8f8f874abfe5e1b7a89938a295937ae608b427744e"`
[INFO] [stdout] 47d7f523b7b213e861c27a8f8f874abfe5e1b7a89938a295937ae608b427744e