[INFO] crate libosu 0.0.7 is already in cache
[INFO] extracting crate libosu 0.0.7 into work/ex/beta-1.38-1/sources/1.37.0/reg/libosu/0.0.7
[INFO] extracting crate libosu 0.0.7 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/libosu/0.0.7
[INFO] validating manifest of libosu-0.0.7 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 libosu-0.0.7 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 libosu-0.0.7
[INFO] finished frobbing libosu-0.0.7
[INFO] frobbed toml for libosu-0.0.7 written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/reg/libosu/0.0.7/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] testing libosu-0.0.7 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-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5762ef0ecb334ec7ab1b92a6b72b0e8d3d6d2b6a9d487605baf18fb04493a84b
[INFO] running `"docker" "start" "-a" "5762ef0ecb334ec7ab1b92a6b72b0e8d3d6d2b6a9d487605baf18fb04493a84b"`
[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 3.98s
[INFO] running `"docker" "inspect" "5762ef0ecb334ec7ab1b92a6b72b0e8d3d6d2b6a9d487605baf18fb04493a84b"`
[INFO] running `"docker" "rm" "-f" "5762ef0ecb334ec7ab1b92a6b72b0e8d3d6d2b6a9d487605baf18fb04493a84b"`
[INFO] [stdout] 5762ef0ecb334ec7ab1b92a6b72b0e8d3d6d2b6a9d487605baf18fb04493a84b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] ce06ed8ba661c5c3cb43a12734d30efd3bb2b1fa162b31c35704592a00dd72c0
[INFO] running `"docker" "start" "-a" "ce06ed8ba661c5c3cb43a12734d30efd3bb2b1fa162b31c35704592a00dd72c0"`
[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 5.12s
[INFO] running `"docker" "inspect" "ce06ed8ba661c5c3cb43a12734d30efd3bb2b1fa162b31c35704592a00dd72c0"`
[INFO] running `"docker" "rm" "-f" "ce06ed8ba661c5c3cb43a12734d30efd3bb2b1fa162b31c35704592a00dd72c0"`
[INFO] [stdout] ce06ed8ba661c5c3cb43a12734d30efd3bb2b1fa162b31c35704592a00dd72c0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 225e40957ae73ae865cd977eca00825c1f8fed017f6aa26864fcfa1d19a76169
[INFO] running `"docker" "start" "-a" "225e40957ae73ae865cd977eca00825c1f8fed017f6aa26864fcfa1d19a76169"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/libosu-da3feefd93a589b4
[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-a4a0b879f94cc3ad
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_parser_804683 ... ok
[INFO] [stdout] test test_parser_774965 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libosu
[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" "225e40957ae73ae865cd977eca00825c1f8fed017f6aa26864fcfa1d19a76169"`
[INFO] running `"docker" "rm" "-f" "225e40957ae73ae865cd977eca00825c1f8fed017f6aa26864fcfa1d19a76169"`
[INFO] [stdout] 225e40957ae73ae865cd977eca00825c1f8fed017f6aa26864fcfa1d19a76169