[INFO] cloning repository Nalleyer/rust_99_problem
[INFO] running `"git" "clone" "--bare" "git://github.com/Nalleyer/rust_99_problem.git" "work/cache/sources/gh/Nalleyer/rust_99_problem"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/Nalleyer/rust_99_problem'...
[INFO] running `"git" "clone" "work/cache/sources/gh/Nalleyer/rust_99_problem" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Nalleyer/rust_99_problem"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Nalleyer/rust_99_problem'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Nalleyer/rust_99_problem" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Nalleyer/rust_99_problem"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Nalleyer/rust_99_problem'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 963a80b26b71b2cb375922c8d99b1096e715d0e5
[INFO] sha for GitHub repo Nalleyer/rust_99_problem: 963a80b26b71b2cb375922c8d99b1096e715d0e5
[INFO] validating manifest of Nalleyer/rust_99_problem on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Nalleyer/rust_99_problem on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Nalleyer/rust_99_problem
[INFO] finished frobbing Nalleyer/rust_99_problem
[INFO] frobbed toml for Nalleyer/rust_99_problem written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Nalleyer/rust_99_problem/Cargo.toml
[INFO] started frobbing Nalleyer/rust_99_problem
[INFO] finished frobbing Nalleyer/rust_99_problem
[INFO] frobbed toml for Nalleyer/rust_99_problem written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/Nalleyer/rust_99_problem/Cargo.toml
[INFO] crate Nalleyer/rust_99_problem already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Nalleyer/rust_99_problem against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Nalleyer/rust_99_problem:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 1dd2edbeb966f5fa23cfb90e293635fc75c167c988a07cfca5e307a94421d5e6
[INFO] running `"docker" "start" "-a" "1dd2edbeb966f5fa23cfb90e293635fc75c167c988a07cfca5e307a94421d5e6"`
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling quickcheck_macros v0.8.0
[INFO] [stderr]    Compiling rust_99_problem v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/solves/p7.rs:14:24
[INFO] [stderr]    |
[INFO] [stderr] 14 |             Node::Item(x) => vec!(node.clone()),
[INFO] [stderr]    |                        ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_item`
[INFO] [stderr]   --> src/common.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let is_item: bool = g.gen();
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_is_item`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `flat`
[INFO] [stderr]   --> src/solves/p7.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn flat<T: Clone>(ls: &List<T>) -> List<T> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.31s
[INFO] running `"docker" "inspect" "1dd2edbeb966f5fa23cfb90e293635fc75c167c988a07cfca5e307a94421d5e6"`
[INFO] running `"docker" "rm" "-f" "1dd2edbeb966f5fa23cfb90e293635fc75c167c988a07cfca5e307a94421d5e6"`
[INFO] [stdout] 1dd2edbeb966f5fa23cfb90e293635fc75c167c988a07cfca5e307a94421d5e6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Nalleyer/rust_99_problem:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0711e1149709767fa0f0509795e9ef123d94a2a8c0c6d0a1092a9bfb70f7fb3c
[INFO] running `"docker" "start" "-a" "0711e1149709767fa0f0509795e9ef123d94a2a8c0c6d0a1092a9bfb70f7fb3c"`
[INFO] [stderr]    Compiling rust_99_problem v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[macro_use(quickcheck)]
[INFO] [stderr]   |             ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/solves/p7.rs:14:24
[INFO] [stderr]    |
[INFO] [stderr] 14 |             Node::Item(x) => vec!(node.clone()),
[INFO] [stderr]    |                        ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `is_item`
[INFO] [stderr]   --> src/common.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         let is_item: bool = g.gen();
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_is_item`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `"docker" "inspect" "0711e1149709767fa0f0509795e9ef123d94a2a8c0c6d0a1092a9bfb70f7fb3c"`
[INFO] running `"docker" "rm" "-f" "0711e1149709767fa0f0509795e9ef123d94a2a8c0c6d0a1092a9bfb70f7fb3c"`
[INFO] [stdout] 0711e1149709767fa0f0509795e9ef123d94a2a8c0c6d0a1092a9bfb70f7fb3c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/Nalleyer/rust_99_problem:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] 4ce98c87b9d0e9b1c6d30585e839e8dad74f5433162f85c61b3587a23e763f90
[INFO] running `"docker" "start" "-a" "4ce98c87b9d0e9b1c6d30585e839e8dad74f5433162f85c61b3587a23e763f90"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_99_problem-f73618758ad152a2
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test solves::p7::tests::empty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4ce98c87b9d0e9b1c6d30585e839e8dad74f5433162f85c61b3587a23e763f90"`
[INFO] running `"docker" "rm" "-f" "4ce98c87b9d0e9b1c6d30585e839e8dad74f5433162f85c61b3587a23e763f90"`
[INFO] [stdout] 4ce98c87b9d0e9b1c6d30585e839e8dad74f5433162f85c61b3587a23e763f90