[INFO] updating cached repository pczora/olderon
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pczora/olderon
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pczora/olderon" "work/ex/beta-1.38-1/sources/1.37.0/gh/pczora/olderon"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pczora/olderon'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pczora/olderon" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pczora/olderon"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pczora/olderon'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e47201b4296998fe8b3b79880e6cfc3c8ed8944
[INFO] sha for GitHub repo pczora/olderon: 7e47201b4296998fe8b3b79880e6cfc3c8ed8944
[INFO] validating manifest of pczora/olderon 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 pczora/olderon 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 pczora/olderon
[INFO] finished frobbing pczora/olderon
[INFO] frobbed toml for pczora/olderon written to work/ex/beta-1.38-1/sources/1.37.0/gh/pczora/olderon/Cargo.toml
[INFO] started frobbing pczora/olderon
[INFO] finished frobbing pczora/olderon
[INFO] frobbed toml for pczora/olderon written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pczora/olderon/Cargo.toml
[INFO] crate pczora/olderon 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pczora/olderon/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[INFO] the lockfile is outdated, regenerating it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" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 pczora/olderon against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pczora/olderon:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ef05b3bb205ec30549519806b23ba05f9ff479147c8ff6425e54173ccb6fab13
[INFO] running `"docker" "start" "-a" "ef05b3bb205ec30549519806b23ba05f9ff479147c8ff6425e54173ccb6fab13"`
[INFO] [stderr]    Compiling olderon v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::num`
[INFO] [stderr]  --> src/fileparser.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::num;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/fileparser.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let s = &mut String::new();
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hlt_regex`
[INFO] [stderr]   --> src/fileparser.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let hlt_regex = Regex::new(r"^HLT").unwrap();
[INFO] [stderr]    |         ^^^^^^^^^ help: consider prefixing with an underscore: `_hlt_regex`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/fileparser.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut file = match File::open(path) {
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/fileparser.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut reader = BufReader::new(&file);
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.02s
[INFO] running `"docker" "inspect" "ef05b3bb205ec30549519806b23ba05f9ff479147c8ff6425e54173ccb6fab13"`
[INFO] running `"docker" "rm" "-f" "ef05b3bb205ec30549519806b23ba05f9ff479147c8ff6425e54173ccb6fab13"`
[INFO] [stdout] ef05b3bb205ec30549519806b23ba05f9ff479147c8ff6425e54173ccb6fab13
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pczora/olderon:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d60415ad93394c7a430ba7cf5edd54a36db952dae8ff7710507ce9e7912448c0
[INFO] running `"docker" "start" "-a" "d60415ad93394c7a430ba7cf5edd54a36db952dae8ff7710507ce9e7912448c0"`
[INFO] [stderr]    Compiling olderon v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::num`
[INFO] [stderr]  --> src/fileparser.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::num;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/fileparser.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let s = &mut String::new();
[INFO] [stderr]    |         ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hlt_regex`
[INFO] [stderr]   --> src/fileparser.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let hlt_regex = Regex::new(r"^HLT").unwrap();
[INFO] [stderr]    |         ^^^^^^^^^ help: consider prefixing with an underscore: `_hlt_regex`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/fileparser.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 14 |     let mut file = match File::open(path) {
[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] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/fileparser.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut reader = BufReader::new(&file);
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "d60415ad93394c7a430ba7cf5edd54a36db952dae8ff7710507ce9e7912448c0"`
[INFO] running `"docker" "rm" "-f" "d60415ad93394c7a430ba7cf5edd54a36db952dae8ff7710507ce9e7912448c0"`
[INFO] [stdout] d60415ad93394c7a430ba7cf5edd54a36db952dae8ff7710507ce9e7912448c0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pczora/olderon:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 13166aaa5e6d301f385e6c2f268d9dfb7cfc4cbf5cb3f8b49312c514896b9076
[INFO] running `"docker" "start" "-a" "13166aaa5e6d301f385e6c2f268d9dfb7cfc4cbf5cb3f8b49312c514896b9076"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/olderon-fb0d8a4e14efa999
[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" "13166aaa5e6d301f385e6c2f268d9dfb7cfc4cbf5cb3f8b49312c514896b9076"`
[INFO] running `"docker" "rm" "-f" "13166aaa5e6d301f385e6c2f268d9dfb7cfc4cbf5cb3f8b49312c514896b9076"`
[INFO] [stdout] 13166aaa5e6d301f385e6c2f268d9dfb7cfc4cbf5cb3f8b49312c514896b9076