[INFO] updating cached repository AlmostAll/intro-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/AlmostAll/intro-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/AlmostAll/intro-rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/AlmostAll/intro-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/AlmostAll/intro-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AlmostAll/intro-rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AlmostAll/intro-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AlmostAll/intro-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0bd0374a93f2d9ca62125c01ee6f0d032f49cd5c
[INFO] sha for GitHub repo AlmostAll/intro-rs: 0bd0374a93f2d9ca62125c01ee6f0d032f49cd5c
[INFO] validating manifest of AlmostAll/intro-rs 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 AlmostAll/intro-rs 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 AlmostAll/intro-rs
[INFO] finished frobbing AlmostAll/intro-rs
[INFO] frobbed toml for AlmostAll/intro-rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/AlmostAll/intro-rs/Cargo.toml
[INFO] started frobbing AlmostAll/intro-rs
[INFO] finished frobbing AlmostAll/intro-rs
[INFO] frobbed toml for AlmostAll/intro-rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/AlmostAll/intro-rs/Cargo.toml
[INFO] crate AlmostAll/intro-rs 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing AlmostAll/intro-rs 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/AlmostAll/intro-rs:/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] 55da8337812a4b642d20aa47f3d8a3c9ba59d0706bd2993f17296024525d8655
[INFO] running `"docker" "start" "-a" "55da8337812a4b642d20aa47f3d8a3c9ba59d0706bd2993f17296024525d8655"`
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling textwrap v0.6.0
[INFO] [stderr]    Compiling clap v2.25.0
[INFO] [stderr]    Compiling intro-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::string::String`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::string::String;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:43:19
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn handle_integer(input: i32) -> i32 {
[INFO] [stderr]    |                   ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.19s
[INFO] running `"docker" "inspect" "55da8337812a4b642d20aa47f3d8a3c9ba59d0706bd2993f17296024525d8655"`
[INFO] running `"docker" "rm" "-f" "55da8337812a4b642d20aa47f3d8a3c9ba59d0706bd2993f17296024525d8655"`
[INFO] [stdout] 55da8337812a4b642d20aa47f3d8a3c9ba59d0706bd2993f17296024525d8655
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/AlmostAll/intro-rs:/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] 7fe291e83418d3ed9488c9e14b6ede1060787b062137a7bd7a56093aecd4596b
[INFO] running `"docker" "start" "-a" "7fe291e83418d3ed9488c9e14b6ede1060787b062137a7bd7a56093aecd4596b"`
[INFO] [stderr]    Compiling intro-rs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::string::String`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::string::String;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:43:19
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn handle_integer(input: i32) -> i32 {
[INFO] [stderr]    |                   ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "7fe291e83418d3ed9488c9e14b6ede1060787b062137a7bd7a56093aecd4596b"`
[INFO] running `"docker" "rm" "-f" "7fe291e83418d3ed9488c9e14b6ede1060787b062137a7bd7a56093aecd4596b"`
[INFO] [stdout] 7fe291e83418d3ed9488c9e14b6ede1060787b062137a7bd7a56093aecd4596b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/AlmostAll/intro-rs:/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] 892e0df978a9b775d09d3640781eb724dff914008635926bf75f88dfb3aee4cd
[INFO] running `"docker" "start" "-a" "892e0df978a9b775d09d3640781eb724dff914008635926bf75f88dfb3aee4cd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/intro_rs-c9de61ae2988d453
[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" "892e0df978a9b775d09d3640781eb724dff914008635926bf75f88dfb3aee4cd"`
[INFO] running `"docker" "rm" "-f" "892e0df978a9b775d09d3640781eb724dff914008635926bf75f88dfb3aee4cd"`
[INFO] [stdout] 892e0df978a9b775d09d3640781eb724dff914008635926bf75f88dfb3aee4cd