[INFO] updating cached repository GeekcampSG/challenge-2015
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/GeekcampSG/challenge-2015
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/GeekcampSG/challenge-2015" "work/ex/beta-1.37-6/sources/1.36.0/gh/GeekcampSG/challenge-2015"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/GeekcampSG/challenge-2015'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/GeekcampSG/challenge-2015" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/GeekcampSG/challenge-2015"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/GeekcampSG/challenge-2015'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 647f1fa9588d1e64edf8ede8669854b71e0f8a19
[INFO] sha for GitHub repo GeekcampSG/challenge-2015: 647f1fa9588d1e64edf8ede8669854b71e0f8a19
[INFO] validating manifest of GeekcampSG/challenge-2015 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 GeekcampSG/challenge-2015 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 GeekcampSG/challenge-2015
[INFO] finished frobbing GeekcampSG/challenge-2015
[INFO] frobbed toml for GeekcampSG/challenge-2015 written to work/ex/beta-1.37-6/sources/1.36.0/gh/GeekcampSG/challenge-2015/Cargo.toml
[INFO] started frobbing GeekcampSG/challenge-2015
[INFO] finished frobbing GeekcampSG/challenge-2015
[INFO] frobbed toml for GeekcampSG/challenge-2015 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/GeekcampSG/challenge-2015/Cargo.toml
[INFO] crate GeekcampSG/challenge-2015 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/GeekcampSG/challenge-2015/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 GeekcampSG/challenge-2015 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/GeekcampSG/challenge-2015:/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] 3a5ebbd1a65c6d9f38049e6942890e073c65e3a7b92b9e97402cedc49be2216b
[INFO] running `"docker" "start" "-a" "3a5ebbd1a65c6d9f38049e6942890e073c65e3a7b92b9e97402cedc49be2216b"`
[INFO] [stderr]    Compiling bufstream v0.1.4
[INFO] [stderr]    Compiling challenge-2015 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stderr]   --> src/main.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             thread::sleep_ms(100);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `"docker" "inspect" "3a5ebbd1a65c6d9f38049e6942890e073c65e3a7b92b9e97402cedc49be2216b"`
[INFO] running `"docker" "rm" "-f" "3a5ebbd1a65c6d9f38049e6942890e073c65e3a7b92b9e97402cedc49be2216b"`
[INFO] [stdout] 3a5ebbd1a65c6d9f38049e6942890e073c65e3a7b92b9e97402cedc49be2216b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/GeekcampSG/challenge-2015:/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] fd9589d4acfcad51a7a5ecc6615c806eff801da67325a038d85559469f726593
[INFO] running `"docker" "start" "-a" "fd9589d4acfcad51a7a5ecc6615c806eff801da67325a038d85559469f726593"`
[INFO] [stderr]    Compiling challenge-2015 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stderr]   --> src/main.rs:78:13
[INFO] [stderr]    |
[INFO] [stderr] 78 |             thread::sleep_ms(100);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "fd9589d4acfcad51a7a5ecc6615c806eff801da67325a038d85559469f726593"`
[INFO] running `"docker" "rm" "-f" "fd9589d4acfcad51a7a5ecc6615c806eff801da67325a038d85559469f726593"`
[INFO] [stdout] fd9589d4acfcad51a7a5ecc6615c806eff801da67325a038d85559469f726593
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/GeekcampSG/challenge-2015:/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] 603c17ac8a5ec7eb87b16cefddd996497a5287192100e0dcc6b55caa98301d09
[INFO] running `"docker" "start" "-a" "603c17ac8a5ec7eb87b16cefddd996497a5287192100e0dcc6b55caa98301d09"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/challenge_2015-4be892dd4a084077
[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" "603c17ac8a5ec7eb87b16cefddd996497a5287192100e0dcc6b55caa98301d09"`
[INFO] running `"docker" "rm" "-f" "603c17ac8a5ec7eb87b16cefddd996497a5287192100e0dcc6b55caa98301d09"`
[INFO] [stdout] 603c17ac8a5ec7eb87b16cefddd996497a5287192100e0dcc6b55caa98301d09