[INFO] updating cached repository https://github.com/kolloch/digits-differ
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2de412ec1fd43d7941a22e9f8aa51965dadbcf52
[INFO] testing kolloch/digits-differ against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkolloch%2Fdigits-differ" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kolloch/digits-differ on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking git repo https://github.com/kolloch/digits-differ
[INFO] finished tweaking git repo https://github.com/kolloch/digits-differ
[INFO] tweaked toml for git repo https://github.com/kolloch/digits-differ written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kolloch/digits-differ already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1d95ab6678d50194a93ffab37c1146eacb169318941512758d10532381a9597
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b1d95ab6678d50194a93ffab37c1146eacb169318941512758d10532381a9597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1d95ab6678d50194a93ffab37c1146eacb169318941512758d10532381a9597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1d95ab6678d50194a93ffab37c1146eacb169318941512758d10532381a9597", kill_on_drop: false }`
[INFO] [stdout] b1d95ab6678d50194a93ffab37c1146eacb169318941512758d10532381a9597
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 742890b200ad5f91c2fe4be0672a79b1995077b004a266b5ad90f31b811b7f97
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "742890b200ad5f91c2fe4be0672a79b1995077b004a266b5ad90f31b811b7f97", kill_on_drop: false }`
[INFO] [stderr]    Compiling vob v2.0.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling numbers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/main.rs:189:15
[INFO] [stdout]     |
[INFO] [stdout] 189 |     buf: [u8; (N_DIGITS+1)],
[INFO] [stdout]     |               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/main.rs:194:30
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut buf = [b'0'; (N_DIGITS+1)];
[INFO] [stdout]     |                              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.15s
[INFO] running `Command { std: "docker" "inspect" "742890b200ad5f91c2fe4be0672a79b1995077b004a266b5ad90f31b811b7f97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "742890b200ad5f91c2fe4be0672a79b1995077b004a266b5ad90f31b811b7f97", kill_on_drop: false }`
[INFO] [stdout] 742890b200ad5f91c2fe4be0672a79b1995077b004a266b5ad90f31b811b7f97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aea52c82634f23a171c631c3351aefe41e068ded60471097f2f6c32849d1549f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "aea52c82634f23a171c631c3351aefe41e068ded60471097f2f6c32849d1549f", kill_on_drop: false }`
[INFO] [stderr]    Compiling vob v2.0.4
[INFO] [stderr]    Compiling numbers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/main.rs:189:15
[INFO] [stdout]     |
[INFO] [stdout] 189 |     buf: [u8; (N_DIGITS+1)],
[INFO] [stdout]     |               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/main.rs:194:30
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut buf = [b'0'; (N_DIGITS+1)];
[INFO] [stdout]     |                              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "aea52c82634f23a171c631c3351aefe41e068ded60471097f2f6c32849d1549f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aea52c82634f23a171c631c3351aefe41e068ded60471097f2f6c32849d1549f", kill_on_drop: false }`
[INFO] [stdout] aea52c82634f23a171c631c3351aefe41e068ded60471097f2f6c32849d1549f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dfab87a4757682e244e8747672af157380ce98ae893c1019dc06681f51e90d1b
[INFO] running `Command { std: "docker" "start" "-a" "dfab87a4757682e244e8747672af157380ce98ae893c1019dc06681f51e90d1b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary parentheses around const expression
[INFO] [stderr]    --> src/main.rs:189:15
[INFO] [stderr]     |
[INFO] [stderr] 189 |     buf: [u8; (N_DIGITS+1)],
[INFO] [stderr]     |               ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around const expression
[INFO] [stderr]    --> src/main.rs:194:30
[INFO] [stderr]     |
[INFO] [stderr] 194 |         let mut buf = [b'0'; (N_DIGITS+1)];
[INFO] [stderr]     |                              ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/numbers-0ebd4ce33e17417a
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_three_digits ... ok
[INFO] [stdout] test test_write_num_reverse ... ok
[INFO] [stdout] test test_write_num_easy ... ok
[INFO] [stdout] test test_two_digits ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dfab87a4757682e244e8747672af157380ce98ae893c1019dc06681f51e90d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfab87a4757682e244e8747672af157380ce98ae893c1019dc06681f51e90d1b", kill_on_drop: false }`
[INFO] [stdout] dfab87a4757682e244e8747672af157380ce98ae893c1019dc06681f51e90d1b