[INFO] fetching crate cauly-rust-leetcode-utils 0.1.1...
[INFO] testing cauly-rust-leetcode-utils-0.1.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate cauly-rust-leetcode-utils 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate cauly-rust-leetcode-utils 0.1.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cauly-rust-leetcode-utils 0.1.1
[INFO] finished tweaking crates.io crate cauly-rust-leetcode-utils 0.1.1
[INFO] tweaked toml for crates.io crate cauly-rust-leetcode-utils 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a501b4243a4f88a4e622059abbb410bcf79df8baea19d705be5c8b2647b32ca9
[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" "a501b4243a4f88a4e622059abbb410bcf79df8baea19d705be5c8b2647b32ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a501b4243a4f88a4e622059abbb410bcf79df8baea19d705be5c8b2647b32ca9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a501b4243a4f88a4e622059abbb410bcf79df8baea19d705be5c8b2647b32ca9", kill_on_drop: false }`
[INFO] [stdout] a501b4243a4f88a4e622059abbb410bcf79df8baea19d705be5c8b2647b32ca9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--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] 06ed8c6cc2e58769ad31098246cbc2cf4d711e96cdcf28aa00746b573036e5eb
[INFO] running `Command { std: "docker" "start" "-a" "06ed8c6cc2e58769ad31098246cbc2cf4d711e96cdcf28aa00746b573036e5eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling cauly-rust-leetcode-utils v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/rlfmt.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut filename;
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 2.47s
[INFO] running `Command { std: "docker" "inspect" "06ed8c6cc2e58769ad31098246cbc2cf4d711e96cdcf28aa00746b573036e5eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06ed8c6cc2e58769ad31098246cbc2cf4d711e96cdcf28aa00746b573036e5eb", kill_on_drop: false }`
[INFO] [stdout] 06ed8c6cc2e58769ad31098246cbc2cf4d711e96cdcf28aa00746b573036e5eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3297869c04cd09abd8b05c261610872adcbb3ff98dbf571a0cc55f0a8095a691
[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" "3297869c04cd09abd8b05c261610872adcbb3ff98dbf571a0cc55f0a8095a691", kill_on_drop: false }`
[INFO] [stderr]    Compiling cauly-rust-leetcode-utils v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/rlfmt.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut filename;
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/bin/rlfmt.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let mut filename;
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 2.96s
[INFO] running `Command { std: "docker" "inspect" "3297869c04cd09abd8b05c261610872adcbb3ff98dbf571a0cc55f0a8095a691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3297869c04cd09abd8b05c261610872adcbb3ff98dbf571a0cc55f0a8095a691", kill_on_drop: false }`
[INFO] [stdout] 3297869c04cd09abd8b05c261610872adcbb3ff98dbf571a0cc55f0a8095a691
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 674b2d675440f80948784b90d3fdf5af066c4b0f461aa3913e3ab30e2efd6d13
[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" "674b2d675440f80948784b90d3fdf5af066c4b0f461aa3913e3ab30e2efd6d13", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/bin/rlfmt.rs:20:9
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 20 |     let mut filename;
[INFO] [stdout] 
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]    |         |
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: `cauly-rust-leetcode-utils` (bin "rlfmt") generated 1 warning
[INFO] [stderr] warning: `cauly-rust-leetcode-utils` (bin "rlfmt" test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cauly_rust_leetcode_utils-34ae49a09fa807ff)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rlfmt-a4555145bc47cb50)
[INFO] [stderr]      Running tests/binary_tree.rs (/opt/rustwide/target/debug/deps/binary_tree-f57c266424825503)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test3 ... ok
[INFO] [stdout] test test7 ... ok
[INFO] [stdout] test test2 ... ok
[INFO] [stdout] test test6 ... ok
[INFO] [stdout] test test8 ... ok
[INFO] [stderr]      Running tests/union_find.rs (/opt/rustwide/target/debug/deps/union_find-7a438a35e564f651)
[INFO] [stdout] test test4 ... ok
[INFO] [stderr]    Doc-tests cauly-rust-leetcode-utils
[INFO] [stdout] test test5 ... ok
[INFO] [stdout] test test1 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test2 ... ok
[INFO] [stdout] test test1 ... ok
[INFO] [stdout] test test4 ... ok
[INFO] [stdout] test test5 ... ok
[INFO] [stdout] test test3 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "674b2d675440f80948784b90d3fdf5af066c4b0f461aa3913e3ab30e2efd6d13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "674b2d675440f80948784b90d3fdf5af066c4b0f461aa3913e3ab30e2efd6d13", kill_on_drop: false }`
[INFO] [stdout] 674b2d675440f80948784b90d3fdf5af066c4b0f461aa3913e3ab30e2efd6d13