[INFO] updating cached repository https://github.com/YKG/rust-playground
[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] d0b05d549483715d226c8935136b12384366646f
[INFO] testing YKG/rust-playground against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYKG%2Frust-playground" "/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/YKG/rust-playground 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] started tweaking git repo https://github.com/YKG/rust-playground
[INFO] finished tweaking git repo https://github.com/YKG/rust-playground
[INFO] tweaked toml for git repo https://github.com/YKG/rust-playground written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/YKG/rust-playground 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] dfea5d673297372b4c4741eb6565bcfa0870412ebec1bc7efbfcda1c362f76fa
[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" "dfea5d673297372b4c4741eb6565bcfa0870412ebec1bc7efbfcda1c362f76fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfea5d673297372b4c4741eb6565bcfa0870412ebec1bc7efbfcda1c362f76fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfea5d673297372b4c4741eb6565bcfa0870412ebec1bc7efbfcda1c362f76fa", kill_on_drop: false }`
[INFO] [stdout] dfea5d673297372b4c4741eb6565bcfa0870412ebec1bc7efbfcda1c362f76fa
[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] e8036bb0096fd7fab3297c3ac231f8bb44ae6879f681af1b0712fa6d506a3a25
[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" "e8036bb0096fd7fab3297c3ac231f8bb44ae6879f681af1b0712fa6d506a3a25", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "e8036bb0096fd7fab3297c3ac231f8bb44ae6879f681af1b0712fa6d506a3a25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8036bb0096fd7fab3297c3ac231f8bb44ae6879f681af1b0712fa6d506a3a25", kill_on_drop: false }`
[INFO] [stdout] e8036bb0096fd7fab3297c3ac231f8bb44ae6879f681af1b0712fa6d506a3a25
[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] d6d08199e4007104dd3a84722b081d302fc0188ee2e5596b612e6e9da8f16b1d
[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" "d6d08199e4007104dd3a84722b081d302fc0188ee2e5596b612e6e9da8f16b1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> tests/tuple.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let t1 = (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 assigned value
[INFO] [stdout]  --> tests/tuple.rs:4:14
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let t2 = (2);
[INFO] [stdout]   |              ^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> tests/tuple.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | /     /// see test_tuple_cmp
[INFO] [stdout] 27 | |     /// the meaning of the cmp function is:
[INFO] [stdout] 28 | |     /// 1. numbers greater than 3 is greater than those less or equal than 3
[INFO] [stdout] 29 | |     /// 2. for each group(gt3, lte 3), reverse the number orders
[INFO] [stdout]    | |________________________________________________________________^
[INFO] [stdout] 30 |       v.sort_by_key(|&num| (num > 3, Reverse(num)));
[INFO] [stdout]    |       --------------------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_std_cmp_Reverse` should have a snake case name
[INFO] [stdout]   --> tests/tuple.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn test_std_cmp_Reverse() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_std_cmp_reverse`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "d6d08199e4007104dd3a84722b081d302fc0188ee2e5596b612e6e9da8f16b1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6d08199e4007104dd3a84722b081d302fc0188ee2e5596b612e6e9da8f16b1d", kill_on_drop: false }`
[INFO] [stdout] d6d08199e4007104dd3a84722b081d302fc0188ee2e5596b612e6e9da8f16b1d
[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] [stdout] 6106ba0e350a76834c675a5b503653c5a6a7e465c7d0355ca875c74597abe510
[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" "6106ba0e350a76834c675a5b503653c5a6a7e465c7d0355ca875c74597abe510", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> tests/tuple.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 |     let t1 = (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 assigned value
[INFO] [stderr]  --> tests/tuple.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 |     let t2 = (2);
[INFO] [stderr]   |              ^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> tests/tuple.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 | /     /// see test_tuple_cmp
[INFO] [stderr] 27 | |     /// the meaning of the cmp function is:
[INFO] [stderr] 28 | |     /// 1. numbers greater than 3 is greater than those less or equal than 3
[INFO] [stderr] 29 | |     /// 2. for each group(gt3, lte 3), reverse the number orders
[INFO] [stderr]    | |________________________________________________________________^
[INFO] [stderr] 30 |       v.sort_by_key(|&num| (num > 3, Reverse(num)));
[INFO] [stderr]    |       --------------------------------------------- rustdoc does not generate documentation for expressions
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `test_std_cmp_Reverse` should have a snake case name
[INFO] [stderr]   --> tests/tuple.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn test_std_cmp_Reverse() {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_std_cmp_reverse`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_playground-9754bcc34f75dadf
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/trait-143513fa18d34671
[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 3 tests
[INFO] [stdout] test test_largest ... ok
[INFO] [stdout] test test_trait_as_parameter ... ok
[INFO] [stdout] test test_largest2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tuple-bee0904d163fbd3b
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_tuple_cmp ... ok
[INFO] [stdout] test test_std_cmp_Reverse ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6106ba0e350a76834c675a5b503653c5a6a7e465c7d0355ca875c74597abe510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6106ba0e350a76834c675a5b503653c5a6a7e465c7d0355ca875c74597abe510", kill_on_drop: false }`
[INFO] [stdout] 6106ba0e350a76834c675a5b503653c5a6a7e465c7d0355ca875c74597abe510