[INFO] updating cached repository FeanorTheElf/RustSimonLib
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/FeanorTheElf/RustSimonLib
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/FeanorTheElf/RustSimonLib" "work/ex/beta-1.38-1/sources/1.37.0/gh/FeanorTheElf/RustSimonLib"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/FeanorTheElf/RustSimonLib'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/FeanorTheElf/RustSimonLib" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FeanorTheElf/RustSimonLib"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FeanorTheElf/RustSimonLib'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 624132a3b1c7cab22fd5d9e75922958a13a15bfc
[INFO] sha for GitHub repo FeanorTheElf/RustSimonLib: 624132a3b1c7cab22fd5d9e75922958a13a15bfc
[INFO] validating manifest of FeanorTheElf/RustSimonLib 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 FeanorTheElf/RustSimonLib 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 FeanorTheElf/RustSimonLib
[INFO] finished frobbing FeanorTheElf/RustSimonLib
[INFO] frobbed toml for FeanorTheElf/RustSimonLib written to work/ex/beta-1.38-1/sources/1.37.0/gh/FeanorTheElf/RustSimonLib/Cargo.toml
[INFO] started frobbing FeanorTheElf/RustSimonLib
[INFO] finished frobbing FeanorTheElf/RustSimonLib
[INFO] frobbed toml for FeanorTheElf/RustSimonLib written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/FeanorTheElf/RustSimonLib/Cargo.toml
[INFO] crate FeanorTheElf/RustSimonLib 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]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing FeanorTheElf/RustSimonLib 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/FeanorTheElf/RustSimonLib:/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] b837ac02ae1a0a50077d0911b47c5bf05fc6101995b633221560cb98fac187c5
[INFO] running `"docker" "start" "-a" "b837ac02ae1a0a50077d0911b47c5bf05fc6101995b633221560cb98fac187c5"`
[INFO] [stderr]    Compiling simon_util v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn expa(n: &i32) -> i32 {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test`
[INFO] [stderr]   --> src/main.rs:36:6
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let test = CheckDrop(String::from("foo"));
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_test`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expa`
[INFO] [stderr]  --> src/main.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn expa(n: &i32) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expb`
[INFO] [stderr]   --> src/main.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn expb(a: &i32, b: &i32, c: Option<&i32>) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `"docker" "inspect" "b837ac02ae1a0a50077d0911b47c5bf05fc6101995b633221560cb98fac187c5"`
[INFO] running `"docker" "rm" "-f" "b837ac02ae1a0a50077d0911b47c5bf05fc6101995b633221560cb98fac187c5"`
[INFO] [stdout] b837ac02ae1a0a50077d0911b47c5bf05fc6101995b633221560cb98fac187c5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/FeanorTheElf/RustSimonLib:/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] 4d7653f40932514ed99c33c078036a0194a323a6c91f8c967f79a8f4b3baf9ac
[INFO] running `"docker" "start" "-a" "4d7653f40932514ed99c33c078036a0194a323a6c91f8c967f79a8f4b3baf9ac"`
[INFO] [stderr]    Compiling simon_util v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]  --> src/main.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn expa(n: &i32) -> i32 {
[INFO] [stderr]   |         ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test`
[INFO] [stderr]   --> src/main.rs:36:6
[INFO] [stderr]    |
[INFO] [stderr] 36 |     let test = CheckDrop(String::from("foo"));
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_test`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expa`
[INFO] [stderr]  --> src/main.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn expa(n: &i32) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `expb`
[INFO] [stderr]   --> src/main.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn expb(a: &i32, b: &i32, c: Option<&i32>) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `"docker" "inspect" "4d7653f40932514ed99c33c078036a0194a323a6c91f8c967f79a8f4b3baf9ac"`
[INFO] running `"docker" "rm" "-f" "4d7653f40932514ed99c33c078036a0194a323a6c91f8c967f79a8f4b3baf9ac"`
[INFO] [stdout] 4d7653f40932514ed99c33c078036a0194a323a6c91f8c967f79a8f4b3baf9ac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/FeanorTheElf/RustSimonLib:/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] 12835bd09cc50186cc96a4b544a0f715b818e1f4ed5718074d84a38f355a886e
[INFO] running `"docker" "start" "-a" "12835bd09cc50186cc96a4b544a0f715b818e1f4ed5718074d84a38f355a886e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simon_util-b689beeebc2e56d2
[INFO] [stdout] running 2 tests
[INFO] [stdout] test interval_tree::test_add ... ok
[INFO] [stdout] test interval_tree::test_correct_drop ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simon_util-b97b6977f6c5377e
[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 2 tests
[INFO] [stdout] test interval_tree::test_add ... ok
[INFO] [stderr]    Doc-tests simon_util
[INFO] [stdout] test interval_tree::test_correct_drop ... ok
[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" "12835bd09cc50186cc96a4b544a0f715b818e1f4ed5718074d84a38f355a886e"`
[INFO] running `"docker" "rm" "-f" "12835bd09cc50186cc96a4b544a0f715b818e1f4ed5718074d84a38f355a886e"`
[INFO] [stdout] 12835bd09cc50186cc96a4b544a0f715b818e1f4ed5718074d84a38f355a886e