[INFO] fetching crate random_color 0.5.0...
[INFO] testing random_color-0.5.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate random_color 0.5.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate random_color 0.5.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate random_color 0.5.0
[INFO] finished tweaking crates.io crate random_color 0.5.0
[INFO] tweaked toml for crates.io crate random_color 0.5.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", 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] 627b3bd23b20cc1875a3753853fc3c3bcf9bb90088ba214a1593a8f4cbf067bf
[INFO] running `Command { std: "docker" "start" "-a" "627b3bd23b20cc1875a3753853fc3c3bcf9bb90088ba214a1593a8f4cbf067bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "627b3bd23b20cc1875a3753853fc3c3bcf9bb90088ba214a1593a8f4cbf067bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "627b3bd23b20cc1875a3753853fc3c3bcf9bb90088ba214a1593a8f4cbf067bf", kill_on_drop: false }`
[INFO] [stdout] 627b3bd23b20cc1875a3753853fc3c3bcf9bb90088ba214a1593a8f4cbf067bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 617b449ae4844d5b45a22120f7f8057385bd05298a62019c573955e1f43d4a71
[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" "617b449ae4844d5b45a22120f7f8057385bd05298a62019c573955e1f43d4a71", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling random_color v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/color_dictionary.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         (minimum_value)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.49s
[INFO] running `Command { std: "docker" "inspect" "617b449ae4844d5b45a22120f7f8057385bd05298a62019c573955e1f43d4a71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "617b449ae4844d5b45a22120f7f8057385bd05298a62019c573955e1f43d4a71", kill_on_drop: false }`
[INFO] [stdout] 617b449ae4844d5b45a22120f7f8057385bd05298a62019c573955e1f43d4a71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", 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] 09af4db95909386b754dd83247b8c10ea5c8ea74d37411304f6d1874547e518f
[INFO] running `Command { std: "docker" "start" "-a" "09af4db95909386b754dd83247b8c10ea5c8ea74d37411304f6d1874547e518f", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/color_dictionary.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         (minimum_value)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling random_color v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/color_dictionary.rs:166:9
[INFO] [stdout]     |
[INFO] [stdout] 166 |         (minimum_value)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "09af4db95909386b754dd83247b8c10ea5c8ea74d37411304f6d1874547e518f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09af4db95909386b754dd83247b8c10ea5c8ea74d37411304f6d1874547e518f", kill_on_drop: false }`
[INFO] [stdout] 09af4db95909386b754dd83247b8c10ea5c8ea74d37411304f6d1874547e518f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cf7b987d393a8205559d8010bde1aa38cf39ddec176c28174a65ce9ea1fa23fd
[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" "cf7b987d393a8205559d8010bde1aa38cf39ddec176c28174a65ce9ea1fa23fd", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/color_dictionary.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |         (minimum_value)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/color_dictionary.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |         (minimum_value)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/random_color-29c191fc75d77571
[INFO] [stdout] running 14 tests
[INFO] [stdout] test tests::generates_color_as_hex ... ok
[INFO] [stdout] test tests::generates_color_as_hsla_string ... ok
[INFO] [stdout] test tests::generates_color_as_hsv_array ... ok
[INFO] [stdout] test tests::seed_by_string ... ok
[INFO] [stdout] test tests::generates_color_as_rgb_array ... ok
[INFO] [stdout] test tests::seed_by_u64 ... ok
[INFO] [stdout] test tests::generates_color_as_rgba_string ... ok
[INFO] [stdout] test tests::to_hex_is_rrggbb ... ok
[INFO] [stdout] test tests::generates_color_as_hsl_array ... ok
[INFO] [stdout] test tests::generates_color_as_rgb_string ... ok
[INFO] [stdout] test tests::accept_values ... ok
[INFO] [stdout] test tests::generates_color_as_hsl_string ... ok
[INFO] [stdout] test tests::seed_by_i64 ... ok
[INFO] [stdout] test tests::single_digit_hex_are_padded_by_to_two_chars ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests random_color
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/workdir/src/color_dictionary.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 |         (minimum_value)
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cf7b987d393a8205559d8010bde1aa38cf39ddec176c28174a65ce9ea1fa23fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf7b987d393a8205559d8010bde1aa38cf39ddec176c28174a65ce9ea1fa23fd", kill_on_drop: false }`
[INFO] [stdout] cf7b987d393a8205559d8010bde1aa38cf39ddec176c28174a65ce9ea1fa23fd