[INFO] updating cached repository https://github.com/JonathanWoollett-Light/rust_solutions
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] e68912154d8428029a2f6ff4e3e863d8b47171a4
[INFO] testing JonathanWoollett-Light/rust_solutions against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJonathanWoollett-Light%2Frust_solutions" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JonathanWoollett-Light/rust_solutions on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/JonathanWoollett-Light/rust_solutions
[INFO] finished tweaking git repo https://github.com/JonathanWoollett-Light/rust_solutions
[INFO] tweaked toml for git repo https://github.com/JonathanWoollett-Light/rust_solutions written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8c80a1f24f5b8fce61b488d7a80bf714a1717653d8e73a4d88f5d0c3a34290ba
[INFO] running `"docker" "start" "-a" "8c80a1f24f5b8fce61b488d7a80bf714a1717653d8e73a4d88f5d0c3a34290ba"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rust_solutions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]  --> src/lib.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let (height,width) = (grid.len(),grid[0].len());
[INFO] [stderr]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `index` is never read
[INFO] [stderr]   --> src/lib.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |             let mut index = usize::default();
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.87s
[INFO] running `"docker" "inspect" "8c80a1f24f5b8fce61b488d7a80bf714a1717653d8e73a4d88f5d0c3a34290ba"`
[INFO] running `"docker" "rm" "-f" "8c80a1f24f5b8fce61b488d7a80bf714a1717653d8e73a4d88f5d0c3a34290ba"`
[INFO] [stdout] 8c80a1f24f5b8fce61b488d7a80bf714a1717653d8e73a4d88f5d0c3a34290ba
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 44ef73e540988361484d3ba09f10114fb1c25aaf9fdb8189e48681e78b309b3c
[INFO] running `"docker" "start" "-a" "44ef73e540988361484d3ba09f10114fb1c25aaf9fdb8189e48681e78b309b3c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust_solutions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]  --> src/lib.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let (height,width) = (grid.len(),grid[0].len());
[INFO] [stderr]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `index` is never read
[INFO] [stderr]   --> src/lib.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |             let mut index = usize::default();
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]  --> src/lib.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let (height,width) = (grid.len(),grid[0].len());
[INFO] [stderr]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `index` is never read
[INFO] [stderr]   --> src/lib.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |             let mut index = usize::default();
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `"docker" "inspect" "44ef73e540988361484d3ba09f10114fb1c25aaf9fdb8189e48681e78b309b3c"`
[INFO] running `"docker" "rm" "-f" "44ef73e540988361484d3ba09f10114fb1c25aaf9fdb8189e48681e78b309b3c"`
[INFO] [stdout] 44ef73e540988361484d3ba09f10114fb1c25aaf9fdb8189e48681e78b309b3c
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8e608f8f9f97e1b364a47675a76692c13c4ce0b9b5b5c70153648012a2f7d64c
[INFO] running `"docker" "start" "-a" "8e608f8f9f97e1b364a47675a76692c13c4ce0b9b5b5c70153648012a2f7d64c"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]  --> src/lib.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let (height,width) = (grid.len(),grid[0].len());
[INFO] [stderr]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `index` is never read
[INFO] [stderr]   --> src/lib.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |             let mut index = usize::default();
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `height`
[INFO] [stderr]  --> src/lib.rs:7:14
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let (height,width) = (grid.len(),grid[0].len());
[INFO] [stderr]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `index` is never read
[INFO] [stderr]   --> src/lib.rs:23:17
[INFO] [stderr]    |
[INFO] [stderr] 23 |             let mut index = usize::default();
[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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_solutions-1795a354a6052de5
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tests-ad7e4641b51d13c1
[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 5 tests
[INFO] [stdout] test tests::min_steps_to_make_strings_anagram ... ok
[INFO] [stdout] test tests::tweet_counts ... ok
[INFO] [stdout] test tests::double_exists ... ok
[INFO] [stdout] test tests::count_negatives ... ok
[INFO] [stdout] test tests::two_sum ... ok
[INFO] [stderr]    Doc-tests rust_solutions
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 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] running `"docker" "inspect" "8e608f8f9f97e1b364a47675a76692c13c4ce0b9b5b5c70153648012a2f7d64c"`
[INFO] running `"docker" "rm" "-f" "8e608f8f9f97e1b364a47675a76692c13c4ce0b9b5b5c70153648012a2f7d64c"`
[INFO] [stdout] 8e608f8f9f97e1b364a47675a76692c13c4ce0b9b5b5c70153648012a2f7d64c