[INFO] updating cached repository https://github.com/YKG/rust-playground
[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] d0b05d549483715d226c8935136b12384366646f
[INFO] testing YKG/rust-playground against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYKG%2Frust-playground" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/YKG/rust-playground 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/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-9/source/Cargo.toml
[INFO] crate git repo https://github.com/YKG/rust-playground already has a lockfile, it will not be regenerated
[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-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" "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] [stdout] 3d42b752a632375daade0ec3f01d2be2be37179d261858a75d06ab11a69b4940
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3d42b752a632375daade0ec3f01d2be2be37179d261858a75d06ab11a69b4940"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `"docker" "inspect" "3d42b752a632375daade0ec3f01d2be2be37179d261858a75d06ab11a69b4940"`
[INFO] running `"docker" "rm" "-f" "3d42b752a632375daade0ec3f01d2be2be37179d261858a75d06ab11a69b4940"`
[INFO] [stdout] 3d42b752a632375daade0ec3f01d2be2be37179d261858a75d06ab11a69b4940
[INFO] running `"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" "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] ec48f1a8ebb8308d5a76eac624f2cd4a27b001b8a1701b98f30e9c2a9da2aeb8
[INFO] running `"docker" "start" "-a" "ec48f1a8ebb8308d5a76eac624f2cd4a27b001b8a1701b98f30e9c2a9da2aeb8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/rustwide/workdir)
[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 1.52s
[INFO] running `"docker" "inspect" "ec48f1a8ebb8308d5a76eac624f2cd4a27b001b8a1701b98f30e9c2a9da2aeb8"`
[INFO] running `"docker" "rm" "-f" "ec48f1a8ebb8308d5a76eac624f2cd4a27b001b8a1701b98f30e9c2a9da2aeb8"`
[INFO] [stdout] ec48f1a8ebb8308d5a76eac624f2cd4a27b001b8a1701b98f30e9c2a9da2aeb8
[INFO] running `"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" "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] 991aaec3eeb46a63f059a2a6b752ab4b4cdf0fbf2271cf241635316f1c6af3db
[INFO] running `"docker" "start" "-a" "991aaec3eeb46a63f059a2a6b752ab4b4cdf0fbf2271cf241635316f1c6af3db"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_playground-89fd513f306728e6
[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/trait-325da50571513a15
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_trait_as_parameter ... ok
[INFO] [stdout] test test_largest2 ... ok
[INFO] [stdout] test test_largest ... 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-2c6be827b806886f
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_std_cmp_Reverse ... ok
[INFO] [stdout] test test_tuple_cmp ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "991aaec3eeb46a63f059a2a6b752ab4b4cdf0fbf2271cf241635316f1c6af3db"`
[INFO] running `"docker" "rm" "-f" "991aaec3eeb46a63f059a2a6b752ab4b4cdf0fbf2271cf241635316f1c6af3db"`
[INFO] [stdout] 991aaec3eeb46a63f059a2a6b752ab4b4cdf0fbf2271cf241635316f1c6af3db