[INFO] fetching crate mice 0.1.6...
[INFO] extracting crate mice 0.1.6 into work/ex/beta-1.37-6/sources/1.36.0/reg/mice/0.1.6
[INFO] extracting crate mice 0.1.6 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mice/0.1.6
[INFO] validating manifest of mice-0.1.6 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 mice-0.1.6 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 mice-0.1.6
[INFO] finished frobbing mice-0.1.6
[INFO] frobbed toml for mice-0.1.6 written to work/ex/beta-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/reg/mice/0.1.6/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 mice-0.1.6 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-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 873080c1f367b9f497b120ec3168deadca855264bbd37793903fb1fe76358c61
[INFO] running `"docker" "start" "-a" "873080c1f367b9f497b120ec3168deadca855264bbd37793903fb1fe76358c61"`
[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 0.87s
[INFO] running `"docker" "inspect" "873080c1f367b9f497b120ec3168deadca855264bbd37793903fb1fe76358c61"`
[INFO] running `"docker" "rm" "-f" "873080c1f367b9f497b120ec3168deadca855264bbd37793903fb1fe76358c61"`
[INFO] [stdout] 873080c1f367b9f497b120ec3168deadca855264bbd37793903fb1fe76358c61
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] dbb3e25f5d4164f1e1981c9074be6b1f30f418fa3b1cbcc9d0d675366c200a06
[INFO] running `"docker" "start" "-a" "dbb3e25f5d4164f1e1981c9074be6b1f30f418fa3b1cbcc9d0d675366c200a06"`
[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 1.00s
[INFO] running `"docker" "inspect" "dbb3e25f5d4164f1e1981c9074be6b1f30f418fa3b1cbcc9d0d675366c200a06"`
[INFO] running `"docker" "rm" "-f" "dbb3e25f5d4164f1e1981c9074be6b1f30f418fa3b1cbcc9d0d675366c200a06"`
[INFO] [stdout] dbb3e25f5d4164f1e1981c9074be6b1f30f418fa3b1cbcc9d0d675366c200a06
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 365bb58784bd39ec9725da095e11e20830930017e825cb842a8962c5706e2b5f
[INFO] running `"docker" "start" "-a" "365bb58784bd39ec9725da095e11e20830930017e825cb842a8962c5706e2b5f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mice-75fa47186380b6bb
[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" "365bb58784bd39ec9725da095e11e20830930017e825cb842a8962c5706e2b5f"`
[INFO] running `"docker" "rm" "-f" "365bb58784bd39ec9725da095e11e20830930017e825cb842a8962c5706e2b5f"`
[INFO] [stdout] 365bb58784bd39ec9725da095e11e20830930017e825cb842a8962c5706e2b5f