[INFO] crate mice 0.1.6 is already in cache
[INFO] extracting crate mice 0.1.6 into work/ex/beta-1.38-1/sources/1.37.0/reg/mice/0.1.6
[INFO] extracting crate mice 0.1.6 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mice/0.1.6
[INFO] validating manifest of mice-0.1.6 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 mice-0.1.6 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 mice-0.1.6
[INFO] finished frobbing mice-0.1.6
[INFO] frobbed toml for mice-0.1.6 written to work/ex/beta-1.38-1/sources/1.37.0/reg/mice/0.1.6/Cargo.toml
[INFO] started frobbing mice-0.1.6
[INFO] finished frobbing mice-0.1.6
[INFO] frobbed toml for mice-0.1.6 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mice/0.1.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 mice-0.1.6 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mice/0.1.6:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] b63e634804a78080773f1a2d0860065e41823131af6915ea7b11468b01610e3c
[INFO] running `"docker" "start" "-a" "b63e634804a78080773f1a2d0860065e41823131af6915ea7b11468b01610e3c"`
[INFO] [stderr]    Compiling mice v0.1.6 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `roll_vec_nice`
[INFO] [stderr]   --> src/util.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn roll_vec_nice(input: &Vec<ExprTuple>) -> Result<String, RollError> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "b63e634804a78080773f1a2d0860065e41823131af6915ea7b11468b01610e3c"`
[INFO] running `"docker" "rm" "-f" "b63e634804a78080773f1a2d0860065e41823131af6915ea7b11468b01610e3c"`
[INFO] [stdout] b63e634804a78080773f1a2d0860065e41823131af6915ea7b11468b01610e3c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mice/0.1.6:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] aeb23341a97e629d99e817c9f42957bb0f53d4dc493a9177a6f5a9fe506b2415
[INFO] running `"docker" "start" "-a" "aeb23341a97e629d99e817c9f42957bb0f53d4dc493a9177a6f5a9fe506b2415"`
[INFO] [stderr]    Compiling mice v0.1.6 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `roll_vec_nice`
[INFO] [stderr]   --> src/util.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub fn roll_vec_nice(input: &Vec<ExprTuple>) -> Result<String, RollError> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "aeb23341a97e629d99e817c9f42957bb0f53d4dc493a9177a6f5a9fe506b2415"`
[INFO] running `"docker" "rm" "-f" "aeb23341a97e629d99e817c9f42957bb0f53d4dc493a9177a6f5a9fe506b2415"`
[INFO] [stdout] aeb23341a97e629d99e817c9f42957bb0f53d4dc493a9177a6f5a9fe506b2415
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/mice/0.1.6:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] af3f44bf09dd0fe6d4da88095f25cc9f35ffe2a4cf6e1e643d92c74d8342c82b
[INFO] running `"docker" "start" "-a" "af3f44bf09dd0fe6d4da88095f25cc9f35ffe2a4cf6e1e643d92c74d8342c82b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mice-e8c3bbf134a3b644
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::arithmetic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mice
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - roll_dice (line 146) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "af3f44bf09dd0fe6d4da88095f25cc9f35ffe2a4cf6e1e643d92c74d8342c82b"`
[INFO] running `"docker" "rm" "-f" "af3f44bf09dd0fe6d4da88095f25cc9f35ffe2a4cf6e1e643d92c74d8342c82b"`
[INFO] [stdout] af3f44bf09dd0fe6d4da88095f25cc9f35ffe2a4cf6e1e643d92c74d8342c82b