[INFO] fetching crate leetcode_prelude 0.2.3...
[INFO] testing leetcode_prelude-0.2.3 against 1.49.0 for beta-1.50-1
[INFO] extracting crate leetcode_prelude 0.2.3 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate leetcode_prelude 0.2.3 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 leetcode_prelude 0.2.3
[INFO] finished tweaking crates.io crate leetcode_prelude 0.2.3
[INFO] tweaked toml for crates.io crate leetcode_prelude 0.2.3 written to /workspace/builds/worker-12/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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1af1cb822d433dd29e5d03b60707e2df2f41a862ef6c4e5cceb4841374e7a160
[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" "1af1cb822d433dd29e5d03b60707e2df2f41a862ef6c4e5cceb4841374e7a160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1af1cb822d433dd29e5d03b60707e2df2f41a862ef6c4e5cceb4841374e7a160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1af1cb822d433dd29e5d03b60707e2df2f41a862ef6c4e5cceb4841374e7a160", kill_on_drop: false }`
[INFO] [stdout] 1af1cb822d433dd29e5d03b60707e2df2f41a862ef6c4e5cceb4841374e7a160
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e969458c3a741ae62ba4232902a374a13c4fe02a5422001a0eb74c48b1028436
[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" "e969458c3a741ae62ba4232902a374a13c4fe02a5422001a0eb74c48b1028436", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode_test v0.1.2
[INFO] [stderr]    Compiling leetcode_prelude v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.78s
[INFO] running `Command { std: "docker" "inspect" "e969458c3a741ae62ba4232902a374a13c4fe02a5422001a0eb74c48b1028436", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e969458c3a741ae62ba4232902a374a13c4fe02a5422001a0eb74c48b1028436", kill_on_drop: false }`
[INFO] [stdout] e969458c3a741ae62ba4232902a374a13c4fe02a5422001a0eb74c48b1028436
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb499d1ed4b467817cb4be0f59085406488e5331441eb2db0f52119bfa26b027
[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" "bb499d1ed4b467817cb4be0f59085406488e5331441eb2db0f52119bfa26b027", kill_on_drop: false }`
[INFO] [stderr]    Compiling leetcode_prelude v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `Command { std: "docker" "inspect" "bb499d1ed4b467817cb4be0f59085406488e5331441eb2db0f52119bfa26b027", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb499d1ed4b467817cb4be0f59085406488e5331441eb2db0f52119bfa26b027", kill_on_drop: false }`
[INFO] [stdout] bb499d1ed4b467817cb4be0f59085406488e5331441eb2db0f52119bfa26b027
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cdf0ea84b34c4de1bcc3259ab276066335fb17441a7c303de9ef148b049f5496
[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" "cdf0ea84b34c4de1bcc3259ab276066335fb17441a7c303de9ef148b049f5496", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/leetcode_prelude-3f38776aeecfd3d2
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stderr]    Doc-tests leetcode_prelude
[INFO] [stdout] test btree::tests::test ... ok
[INFO] [stdout] test tests::test_vec_string ... ok
[INFO] [stdout] test tests::assert_eq_sorted ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/linkedlist.rs - linkedlist (line 38) ... ok
[INFO] [stdout] test src/btree.rs - btree (line 32) ... 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" "cdf0ea84b34c4de1bcc3259ab276066335fb17441a7c303de9ef148b049f5496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdf0ea84b34c4de1bcc3259ab276066335fb17441a7c303de9ef148b049f5496", kill_on_drop: false }`
[INFO] [stdout] cdf0ea84b34c4de1bcc3259ab276066335fb17441a7c303de9ef148b049f5496