[INFO] updating cached repository Lainera/roll
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Lainera/roll
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Lainera/roll" "work/ex/beta-1.37-6/sources/1.36.0/gh/Lainera/roll"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Lainera/roll'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Lainera/roll" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Lainera/roll"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Lainera/roll'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e00afa3de4fbdccca8948d41960745a006d28b4c
[INFO] sha for GitHub repo Lainera/roll: e00afa3de4fbdccca8948d41960745a006d28b4c
[INFO] validating manifest of Lainera/roll 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 Lainera/roll 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 Lainera/roll
[INFO] finished frobbing Lainera/roll
[INFO] frobbed toml for Lainera/roll written to work/ex/beta-1.37-6/sources/1.36.0/gh/Lainera/roll/Cargo.toml
[INFO] started frobbing Lainera/roll
[INFO] finished frobbing Lainera/roll
[INFO] frobbed toml for Lainera/roll written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Lainera/roll/Cargo.toml
[INFO] crate Lainera/roll 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Lainera/roll against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Lainera/roll:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] a7db9832acafcc6143555a5e8e38160d3cd68a4f7e7b9d3eac936fd76b82f9dd
[INFO] running `"docker" "start" "-a" "a7db9832acafcc6143555a5e8e38160d3cd68a4f7e7b9d3eac936fd76b82f9dd"`
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling roll v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/arguments.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 |   /// skip filename
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 12 |   args.next();
[INFO] [stderr]    |   ----------- rustdoc does not generate documentation for expressions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/arguments.rs:120:3
[INFO] [stderr]     |
[INFO] [stderr] 120 |   /// wildcard for both lower and uppercase D's
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 121 |   let d: &[_] = &['D', 'd'];
[INFO] [stderr]     |   -------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `result::Result`
[INFO] [stderr]  --> src/arguments.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{result::Result};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `core::str::<impl str>::trim` that must be used
[INFO] [stderr]   --> src/arguments.rs:27:3
[INFO] [stderr]    |
[INFO] [stderr] 27 |   arg.trim();
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this returns the trimmed string as a slice, without modifying the original
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.33s
[INFO] running `"docker" "inspect" "a7db9832acafcc6143555a5e8e38160d3cd68a4f7e7b9d3eac936fd76b82f9dd"`
[INFO] running `"docker" "rm" "-f" "a7db9832acafcc6143555a5e8e38160d3cd68a4f7e7b9d3eac936fd76b82f9dd"`
[INFO] [stdout] a7db9832acafcc6143555a5e8e38160d3cd68a4f7e7b9d3eac936fd76b82f9dd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Lainera/roll:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 08bdec7e7eaa3b5a6622209944d747129cae917e5be790a8915df2831803cde0
[INFO] running `"docker" "start" "-a" "08bdec7e7eaa3b5a6622209944d747129cae917e5be790a8915df2831803cde0"`
[INFO] [stderr]    Compiling roll v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/arguments.rs:11:3
[INFO] [stderr]    |
[INFO] [stderr] 11 |   /// skip filename
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 12 |   args.next();
[INFO] [stderr]    |   ----------- rustdoc does not generate documentation for expressions
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/arguments.rs:120:3
[INFO] [stderr]     |
[INFO] [stderr] 120 |   /// wildcard for both lower and uppercase D's
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 121 |   let d: &[_] = &['D', 'd'];
[INFO] [stderr]     |   -------------------------- rustdoc does not generate documentation for statements
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `result::Result`
[INFO] [stderr]  --> src/arguments.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{result::Result};
[INFO] [stderr]   |           ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `core::str::<impl str>::trim` that must be used
[INFO] [stderr]   --> src/arguments.rs:27:3
[INFO] [stderr]    |
[INFO] [stderr] 27 |   arg.trim();
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this returns the trimmed string as a slice, without modifying the original
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.42s
[INFO] running `"docker" "inspect" "08bdec7e7eaa3b5a6622209944d747129cae917e5be790a8915df2831803cde0"`
[INFO] running `"docker" "rm" "-f" "08bdec7e7eaa3b5a6622209944d747129cae917e5be790a8915df2831803cde0"`
[INFO] [stdout] 08bdec7e7eaa3b5a6622209944d747129cae917e5be790a8915df2831803cde0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Lainera/roll:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] b59e9e4c4a310ee15d30fc17b4b47c6a96d092aa6e75059221d90227c2d8f4c7
[INFO] running `"docker" "start" "-a" "b59e9e4c4a310ee15d30fc17b4b47c6a96d092aa6e75059221d90227c2d8f4c7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/roll-6f76295b5f5ac6a7
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test arguments::parse_tests::detect_range_type_tests::detect_negative_to_negative ... ok
[INFO] [stdout] test arguments::parse_tests::detect_range_type_tests::detect_negative ... ok
[INFO] [stdout] test arguments::parse_tests::detect_range_type_tests::detect_positive_to_positive ... ok
[INFO] [stdout] test arguments::parse_tests::detect_range_type_tests::detect_positive_to_negative ... ok
[INFO] [stdout] test arguments::parse_tests::detect_range_type_tests::detect_negative_to_positive ... ok
[INFO] [stdout] test arguments::parse_tests::parse_string_vector_tests::orders_many ... ok
[INFO] [stdout] test arguments::parse_tests::detect_range_type_tests::detect_positive ... ok
[INFO] [stdout] test arguments::parse_tests::parse_string_vector_tests::panic_mode ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b59e9e4c4a310ee15d30fc17b4b47c6a96d092aa6e75059221d90227c2d8f4c7"`
[INFO] running `"docker" "rm" "-f" "b59e9e4c4a310ee15d30fc17b4b47c6a96d092aa6e75059221d90227c2d8f4c7"`
[INFO] [stdout] b59e9e4c4a310ee15d30fc17b4b47c6a96d092aa6e75059221d90227c2d8f4c7