[INFO] crate frank 0.1.3 is already in cache
[INFO] extracting crate frank 0.1.3 into work/ex/beta-1.37-6/sources/1.36.0/reg/frank/0.1.3
[INFO] extracting crate frank 0.1.3 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/frank/0.1.3
[INFO] validating manifest of frank-0.1.3 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 frank-0.1.3 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 frank-0.1.3
[INFO] finished frobbing frank-0.1.3
[INFO] frobbed toml for frank-0.1.3 written to work/ex/beta-1.37-6/sources/1.36.0/reg/frank/0.1.3/Cargo.toml
[INFO] started frobbing frank-0.1.3
[INFO] finished frobbing frank-0.1.3
[INFO] frobbed toml for frank-0.1.3 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/frank/0.1.3/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] 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing frank-0.1.3 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/frank/0.1.3:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] fe76d931741be8a1e10c93e20f1ae5450ead4cdf8506b1aa051a3a5aed48c85b
[INFO] running `"docker" "start" "-a" "fe76d931741be8a1e10c93e20f1ae5450ead4cdf8506b1aa051a3a5aed48c85b"`
[INFO] [stderr]    Compiling frank v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `remains` is never read
[INFO] [stderr]    --> src/lib.rs:415:13
[INFO] [stderr]     |
[INFO] [stderr] 415 |     let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly.  Play that fiddle.  Keep this line.  Dancing in an iffy lifetime.
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `remains` is never read
[INFO] [stderr]    --> src/main.rs:415:13
[INFO] [stderr]     |
[INFO] [stderr] 415 |     let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly.  Play that fiddle.  Keep this line.  Dancing in an iffy lifetime.
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rcl`
[INFO] [stderr]    --> src/main.rs:489:9
[INFO] [stderr]     |
[INFO] [stderr] 489 |     let rcl = rank_count_lesser(&spinning);
[INFO] [stderr]     |         ^^^ help: consider prefixing with an underscore: `_rcl`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 7.21s
[INFO] running `"docker" "inspect" "fe76d931741be8a1e10c93e20f1ae5450ead4cdf8506b1aa051a3a5aed48c85b"`
[INFO] running `"docker" "rm" "-f" "fe76d931741be8a1e10c93e20f1ae5450ead4cdf8506b1aa051a3a5aed48c85b"`
[INFO] [stdout] fe76d931741be8a1e10c93e20f1ae5450ead4cdf8506b1aa051a3a5aed48c85b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/frank/0.1.3:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d1e2566438a9186f7a1a6142eecc06b22c1900b7f5b60b90751ab7ba6f8dee6d
[INFO] running `"docker" "start" "-a" "d1e2566438a9186f7a1a6142eecc06b22c1900b7f5b60b90751ab7ba6f8dee6d"`
[INFO] [stderr]    Compiling frank v0.1.3 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `remains` is never read
[INFO] [stderr]    --> src/lib.rs:415:13
[INFO] [stderr]     |
[INFO] [stderr] 415 |     let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly.  Play that fiddle.  Keep this line.  Dancing in an iffy lifetime.
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `remains` is never read
[INFO] [stderr]    --> src/main.rs:415:13
[INFO] [stderr]     |
[INFO] [stderr] 415 |     let mut remains: i128 = 0; //code works as intended despite "never used" warning here for Rust 2018 v 1.33-nightly.  Play that fiddle.  Keep this line.  Dancing in an iffy lifetime.
[INFO] [stderr]     |             ^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rcl`
[INFO] [stderr]    --> src/main.rs:489:9
[INFO] [stderr]     |
[INFO] [stderr] 489 |     let rcl = rank_count_lesser(&spinning);
[INFO] [stderr]     |         ^^^ help: consider prefixing with an underscore: `_rcl`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "d1e2566438a9186f7a1a6142eecc06b22c1900b7f5b60b90751ab7ba6f8dee6d"`
[INFO] running `"docker" "rm" "-f" "d1e2566438a9186f7a1a6142eecc06b22c1900b7f5b60b90751ab7ba6f8dee6d"`
[INFO] [stdout] d1e2566438a9186f7a1a6142eecc06b22c1900b7f5b60b90751ab7ba6f8dee6d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/frank/0.1.3:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 6a0b3575311abd6781371ca331641b4bb8d2b0ed8e727eca7e8fd2d684d1855e
[INFO] running `"docker" "start" "-a" "6a0b3575311abd6781371ca331641b4bb8d2b0ed8e727eca7e8fd2d684d1855e"`
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/frank-d276edee377507d6
[INFO] [stderr]      Running /opt/crater/target/debug/deps/frank-4875b97c9ca411df
[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] [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] [stderr]    Doc-tests frank
[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" "6a0b3575311abd6781371ca331641b4bb8d2b0ed8e727eca7e8fd2d684d1855e"`
[INFO] running `"docker" "rm" "-f" "6a0b3575311abd6781371ca331641b4bb8d2b0ed8e727eca7e8fd2d684d1855e"`
[INFO] [stdout] 6a0b3575311abd6781371ca331641b4bb8d2b0ed8e727eca7e8fd2d684d1855e