[INFO] cloning repository https://github.com/lffg2/rust-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lffg2/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flffg2%2Frust-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flffg2%2Frust-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3b928e552e63be936c55e7185928d167c62c000
[INFO] testing lffg2/rust-playground against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flffg2%2Frust-playground" "/workspace/builds/worker-71/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-71/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lffg2/rust-playground on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lffg2/rust-playground
[INFO] finished tweaking git repo https://github.com/lffg2/rust-playground
[INFO] tweaked toml for git repo https://github.com/lffg2/rust-playground written to /workspace/builds/worker-71/source/Cargo.toml
[INFO] crate git repo https://github.com/lffg2/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8a99116bdcac6329ed3e6a91ffa452f854d1df00aa4ea72614e56d76356fee83
[INFO] running `Command { std: "docker" "start" "-a" "8a99116bdcac6329ed3e6a91ffa452f854d1df00aa4ea72614e56d76356fee83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a99116bdcac6329ed3e6a91ffa452f854d1df00aa4ea72614e56d76356fee83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a99116bdcac6329ed3e6a91ffa452f854d1df00aa4ea72614e56d76356fee83", kill_on_drop: false }`
[INFO] [stdout] 8a99116bdcac6329ed3e6a91ffa452f854d1df00aa4ea72614e56d76356fee83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0bcf3f1f09e6736d2d9c27b632b14e358b72fcc69ed905b26050b079be170b7
[INFO] running `Command { std: "docker" "start" "-a" "a0bcf3f1f09e6736d2d9c27b632b14e358b72fcc69ed905b26050b079be170b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling leet v0.1.0 (/opt/rustwide/workdir/common/leet)
[INFO] [stderr]    Compiling string-builder v0.1.0 (/opt/rustwide/workdir/experiments/string-builder)
[INFO] [stderr]    Compiling iter-with-last v0.1.0 (/opt/rustwide/workdir/experiments/iter-with-last)
[INFO] [stderr]    Compiling iter-to-arr v0.1.0 (/opt/rustwide/workdir/experiments/iter-to-arr)
[INFO] [stderr]    Compiling ast-visitor-etc v0.1.0 (/opt/rustwide/workdir/experiments/ast-visitor-etc)
[INFO] [stderr]    Compiling iter-freq v0.1.0 (/opt/rustwide/workdir/experiments/iter-freq)
[INFO] [stderr]    Compiling stack-overflow v0.1.0 (/opt/rustwide/workdir/experiments/stack-overflow)
[INFO] [stderr]    Compiling multi-test v0.1.0 (/opt/rustwide/workdir/experiments/multi-test)
[INFO] [stderr]    Compiling binary-search-index v0.1.0 (/opt/rustwide/workdir/experiments/binary-search-index)
[INFO] [stderr]    Compiling leet-binary-search v0.1.0 (/opt/rustwide/workdir/leetcode/leet-binary-search)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "a0bcf3f1f09e6736d2d9c27b632b14e358b72fcc69ed905b26050b079be170b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0bcf3f1f09e6736d2d9c27b632b14e358b72fcc69ed905b26050b079be170b7", kill_on_drop: false }`
[INFO] [stdout] a0bcf3f1f09e6736d2d9c27b632b14e358b72fcc69ed905b26050b079be170b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8326b9ed852e6cecadc98711cfc79ec101fa3a6aeabc26403c514af699879fa
[INFO] running `Command { std: "docker" "start" "-a" "b8326b9ed852e6cecadc98711cfc79ec101fa3a6aeabc26403c514af699879fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling ast-visitor-etc v0.1.0 (/opt/rustwide/workdir/experiments/ast-visitor-etc)
[INFO] [stderr]    Compiling iter-with-last v0.1.0 (/opt/rustwide/workdir/experiments/iter-with-last)
[INFO] [stderr]    Compiling binary-search-index v0.1.0 (/opt/rustwide/workdir/experiments/binary-search-index)
[INFO] [stderr]    Compiling multi-test v0.1.0 (/opt/rustwide/workdir/experiments/multi-test)
[INFO] [stderr]    Compiling iter-to-arr v0.1.0 (/opt/rustwide/workdir/experiments/iter-to-arr)
[INFO] [stderr]    Compiling iter-freq v0.1.0 (/opt/rustwide/workdir/experiments/iter-freq)
[INFO] [stderr]    Compiling string-builder v0.1.0 (/opt/rustwide/workdir/experiments/string-builder)
[INFO] [stderr]    Compiling stack-overflow v0.1.0 (/opt/rustwide/workdir/experiments/stack-overflow)
[INFO] [stderr]    Compiling leet v0.1.0 (/opt/rustwide/workdir/common/leet)
[INFO] [stderr]    Compiling leet-binary-search v0.1.0 (/opt/rustwide/workdir/leetcode/leet-binary-search)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "b8326b9ed852e6cecadc98711cfc79ec101fa3a6aeabc26403c514af699879fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8326b9ed852e6cecadc98711cfc79ec101fa3a6aeabc26403c514af699879fa", kill_on_drop: false }`
[INFO] [stdout] b8326b9ed852e6cecadc98711cfc79ec101fa3a6aeabc26403c514af699879fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b0e9833e3462532734c3d76fd7c982a5d8bbb1507fb977d828ded9ae18528f6e
[INFO] running `Command { std: "docker" "start" "-a" "b0e9833e3462532734c3d76fd7c982a5d8bbb1507fb977d828ded9ae18528f6e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ast_visitor_etc-46f8855239111cc9)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_eval_expr ... ok
[INFO] [stdout] test tests::test_lisp_printer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/binary_search_index-b893c802994c19c9)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/iter_freq-db7a008faca3ddd9)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_freq_extension_trait ... ok
[INFO] [stdout] test tests::test_freq_fn ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/iter_to_arr-8a8aa3d502210a11)
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::test_1 ... ok
[INFO] [stdout] test tests::test_3 ... ok
[INFO] [stdout] test tests::test_2 ... ok
[INFO] [stdout] test tests::test_4 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/iter_with_last-c472389c16f89690)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/leet-d2005dc5e0fd3a1d)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/leet_binary_search-101e76009c4bacaf)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::case_found_1 ... ok
[INFO] [stdout] test tests::case_found_2 ... ok
[INFO] [stdout] test tests::case_not_found ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/multi_test-48277e4cb7fdc0bd)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::ok ... ok
[INFO] [stdout] test tests::fail - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/stack_overflow-1365156443871b03)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/string_builder-b57bfcb285b527cd)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ast-visitor-etc
[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] [stderr]    Doc-tests binary-search-index
[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] [stderr]    Doc-tests iter-freq
[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] [stderr]    Doc-tests iter-to-arr
[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] [stderr]    Doc-tests iter-with-last
[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] [stderr]    Doc-tests leet
[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] [stderr]    Doc-tests leet-binary-search
[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] [stderr]    Doc-tests multi-test
[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] [stderr]    Doc-tests string-builder
[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" "b0e9833e3462532734c3d76fd7c982a5d8bbb1507fb977d828ded9ae18528f6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0e9833e3462532734c3d76fd7c982a5d8bbb1507fb977d828ded9ae18528f6e", kill_on_drop: false }`
[INFO] [stdout] b0e9833e3462532734c3d76fd7c982a5d8bbb1507fb977d828ded9ae18528f6e