[INFO] updating cached repository https://github.com/jajo-11/numeric_laplace
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e7e3dc51eb4750ff8ef401bc9433e6fb60e158ea
[INFO] testing jajo-11/numeric_laplace against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjajo-11%2Fnumeric_laplace" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jajo-11/numeric_laplace 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 git repo https://github.com/jajo-11/numeric_laplace
[INFO] finished tweaking git repo https://github.com/jajo-11/numeric_laplace
[INFO] tweaked toml for git repo https://github.com/jajo-11/numeric_laplace written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jajo-11/numeric_laplace already has a lockfile, it will not be regenerated
[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-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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] 4013e1a4e00563c4fbe5fad23dc4cbbbadd741fb858c36fbe06fc7ff8de8a301
[INFO] running `"docker" "start" "-a" "4013e1a4e00563c4fbe5fad23dc4cbbbadd741fb858c36fbe06fc7ff8de8a301"`
[INFO] [stderr]    Compiling rand v0.5.0
[INFO] [stderr]    Compiling numeric_laplace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:150:21
[INFO] [stderr]     |
[INFO] [stderr] 150 |                 let mut delta = self.nodes[i] - new_value;
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:179:21
[INFO] [stderr]     |
[INFO] [stderr] 179 |                 let mut delta = self.nodes[j] - new_value;
[INFO] [stderr]     |                     ----^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/thread_pool.rs:36:33
[INFO] [stderr]    |
[INFO] [stderr] 36 | ...                   let mut delta = nodes[i] - new_value;
[INFO] [stderr]    |                           ----^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.50s
[INFO] running `"docker" "inspect" "4013e1a4e00563c4fbe5fad23dc4cbbbadd741fb858c36fbe06fc7ff8de8a301"`
[INFO] running `"docker" "rm" "-f" "4013e1a4e00563c4fbe5fad23dc4cbbbadd741fb858c36fbe06fc7ff8de8a301"`
[INFO] [stdout] 4013e1a4e00563c4fbe5fad23dc4cbbbadd741fb858c36fbe06fc7ff8de8a301
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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] 2df4a233be5d3683b8749e243c0f4d9b096862968bd7b5d774c2ffce01362fa4
[INFO] running `"docker" "start" "-a" "2df4a233be5d3683b8749e243c0f4d9b096862968bd7b5d774c2ffce01362fa4"`
[INFO] [stderr]    Compiling numeric_laplace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:150:21
[INFO] [stderr]     |
[INFO] [stderr] 150 |                 let mut delta = self.nodes[i] - new_value;
[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: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:179:21
[INFO] [stderr]     |
[INFO] [stderr] 179 |                 let mut delta = self.nodes[j] - new_value;
[INFO] [stderr]     |                     ----^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/thread_pool.rs:36:33
[INFO] [stderr]    |
[INFO] [stderr] 36 | ...                   let mut delta = nodes[i] - new_value;
[INFO] [stderr]    |                           ----^^^^^
[INFO] [stderr]    |                           |
[INFO] [stderr]    |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `"docker" "inspect" "2df4a233be5d3683b8749e243c0f4d9b096862968bd7b5d774c2ffce01362fa4"`
[INFO] running `"docker" "rm" "-f" "2df4a233be5d3683b8749e243c0f4d9b096862968bd7b5d774c2ffce01362fa4"`
[INFO] [stdout] 2df4a233be5d3683b8749e243c0f4d9b096862968bd7b5d774c2ffce01362fa4
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/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] 77310b76241cec9e20e68c3ba7ddf3b47e57c2cbf97c094f6cd1003d1b63ed61
[INFO] running `"docker" "start" "-a" "77310b76241cec9e20e68c3ba7ddf3b47e57c2cbf97c094f6cd1003d1b63ed61"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/numeric_laplace-ba30a17b68fcaf3d
[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]      Running /opt/rustwide/target/debug/deps/main-5749926839592002
[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]      Running /opt/rustwide/target/debug/deps/test_over_relaxation-6661037cc8b3dc39
[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 numeric_laplace
[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" "77310b76241cec9e20e68c3ba7ddf3b47e57c2cbf97c094f6cd1003d1b63ed61"`
[INFO] running `"docker" "rm" "-f" "77310b76241cec9e20e68c3ba7ddf3b47e57c2cbf97c094f6cd1003d1b63ed61"`
[INFO] [stdout] 77310b76241cec9e20e68c3ba7ddf3b47e57c2cbf97c094f6cd1003d1b63ed61