[INFO] crate mascheroni 0.2.0 is already in cache
[INFO] testing mascheroni-0.2.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate mascheroni 0.2.0 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate mascheroni 0.2.0 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mascheroni 0.2.0
[INFO] finished tweaking crates.io crate mascheroni 0.2.0
[INFO] tweaked toml for crates.io crate mascheroni 0.2.0 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 9b9e4919fee447aa7f39976130aa5cfd5960ed94c0e1197fc00dfda53a8d570f
[INFO] running `"docker" "start" "-a" "9b9e4919fee447aa7f39976130aa5cfd5960ed94c0e1197fc00dfda53a8d570f"`
[INFO] [stderr]    Compiling mascheroni v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `ret`
[INFO] [stderr]   --> src/lib.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let mut ret: u64 = 0;
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_ret`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let mut ret: u64 = 0;
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_is_not_palindrome`
[INFO] [stderr]    --> src/lib.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | fn test_is_not_palindrome() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `"docker" "inspect" "9b9e4919fee447aa7f39976130aa5cfd5960ed94c0e1197fc00dfda53a8d570f"`
[INFO] running `"docker" "rm" "-f" "9b9e4919fee447aa7f39976130aa5cfd5960ed94c0e1197fc00dfda53a8d570f"`
[INFO] [stdout] 9b9e4919fee447aa7f39976130aa5cfd5960ed94c0e1197fc00dfda53a8d570f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] c8edd6a089cab9045cb9fe4723f4790b6ac59c122f59871411b773747bfe285b
[INFO] running `"docker" "start" "-a" "c8edd6a089cab9045cb9fe4723f4790b6ac59c122f59871411b773747bfe285b"`
[INFO] [stderr]    Compiling mascheroni v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `ret`
[INFO] [stderr]   --> src/lib.rs:40:13
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let mut ret: u64 = 0;
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_ret`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:40:9
[INFO] [stderr]    |
[INFO] [stderr] 40 |     let mut ret: u64 = 0;
[INFO] [stderr]    |         ----^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_is_not_palindrome`
[INFO] [stderr]    --> src/lib.rs:112:1
[INFO] [stderr]     |
[INFO] [stderr] 112 | fn test_is_not_palindrome() {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `"docker" "inspect" "c8edd6a089cab9045cb9fe4723f4790b6ac59c122f59871411b773747bfe285b"`
[INFO] running `"docker" "rm" "-f" "c8edd6a089cab9045cb9fe4723f4790b6ac59c122f59871411b773747bfe285b"`
[INFO] [stdout] c8edd6a089cab9045cb9fe4723f4790b6ac59c122f59871411b773747bfe285b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 796445a3c0f811250def44d2008aaf4e59aedf8e6c2c9d0818195e3b7b5ab89f
[INFO] running `"docker" "start" "-a" "796445a3c0f811250def44d2008aaf4e59aedf8e6c2c9d0818195e3b7b5ab89f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/mascheroni-3834aa9762cbf6b2
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_is_palindrome ... ok
[INFO] [stdout] test test_string2u64 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mascheroni
[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" "796445a3c0f811250def44d2008aaf4e59aedf8e6c2c9d0818195e3b7b5ab89f"`
[INFO] running `"docker" "rm" "-f" "796445a3c0f811250def44d2008aaf4e59aedf8e6c2c9d0818195e3b7b5ab89f"`
[INFO] [stdout] 796445a3c0f811250def44d2008aaf4e59aedf8e6c2c9d0818195e3b7b5ab89f