[INFO] updating cached repository matklad/select-2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/matklad/select-2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/matklad/select-2018" "work/ex/beta-1.37-6/sources/1.36.0/gh/matklad/select-2018"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/matklad/select-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/matklad/select-2018" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matklad/select-2018"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matklad/select-2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4f7f654a49c6637224c4b01c171d6ce79c5f16f9
[INFO] sha for GitHub repo matklad/select-2018: 4f7f654a49c6637224c4b01c171d6ce79c5f16f9
[INFO] validating manifest of matklad/select-2018 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of matklad/select-2018 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing matklad/select-2018
[INFO] finished frobbing matklad/select-2018
[INFO] frobbed toml for matklad/select-2018 written to work/ex/beta-1.37-6/sources/1.36.0/gh/matklad/select-2018/Cargo.toml
[INFO] started frobbing matklad/select-2018
[INFO] finished frobbing matklad/select-2018
[INFO] frobbed toml for matklad/select-2018 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matklad/select-2018/Cargo.toml
[INFO] crate matklad/select-2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing matklad/select-2018 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matklad/select-2018:/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=warn" "-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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] d8166cee7c3d9a8c429671e6fc98abe740a8a1d1cdf58e36fe081b06ea7acb1f
[INFO] running `"docker" "start" "-a" "d8166cee7c3d9a8c429671e6fc98abe740a8a1d1cdf58e36fe081b06ea7acb1f"`
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.0
[INFO] [stderr]    Compiling crossbeam-channel v0.2.2
[INFO] [stderr]    Compiling macro_select v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `ConcurrentJob`
[INFO] [stderr]  --> src/concurrency.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct ConcurrentJob {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `wait_for_all`
[INFO] [stderr]  --> src/concurrency.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn wait_for_all(mut jobs: Vec<ConcurrentJob>,) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.96s
[INFO] running `"docker" "inspect" "d8166cee7c3d9a8c429671e6fc98abe740a8a1d1cdf58e36fe081b06ea7acb1f"`
[INFO] running `"docker" "rm" "-f" "d8166cee7c3d9a8c429671e6fc98abe740a8a1d1cdf58e36fe081b06ea7acb1f"`
[INFO] [stdout] d8166cee7c3d9a8c429671e6fc98abe740a8a1d1cdf58e36fe081b06ea7acb1f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matklad/select-2018:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 52862985dcc08197862365eb4a1a9249bd6b8a325c6797b0f6c5364fef04f394
[INFO] running `"docker" "start" "-a" "52862985dcc08197862365eb4a1a9249bd6b8a325c6797b0f6c5364fef04f394"`
[INFO] [stderr]    Compiling macro_select v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `ConcurrentJob`
[INFO] [stderr]  --> src/concurrency.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct ConcurrentJob {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `wait_for_all`
[INFO] [stderr]  --> src/concurrency.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn wait_for_all(mut jobs: Vec<ConcurrentJob>,) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `"docker" "inspect" "52862985dcc08197862365eb4a1a9249bd6b8a325c6797b0f6c5364fef04f394"`
[INFO] running `"docker" "rm" "-f" "52862985dcc08197862365eb4a1a9249bd6b8a325c6797b0f6c5364fef04f394"`
[INFO] [stdout] 52862985dcc08197862365eb4a1a9249bd6b8a325c6797b0f6c5364fef04f394
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/matklad/select-2018:/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=warn" "-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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 6195df14517a9198a49cf21118b0fcd392b011fa8825915500683c3ce6321175
[INFO] running `"docker" "start" "-a" "6195df14517a9198a49cf21118b0fcd392b011fa8825915500683c3ce6321175"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/macro_select-0de08b3cc89d2a67
[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] running `"docker" "inspect" "6195df14517a9198a49cf21118b0fcd392b011fa8825915500683c3ce6321175"`
[INFO] running `"docker" "rm" "-f" "6195df14517a9198a49cf21118b0fcd392b011fa8825915500683c3ce6321175"`
[INFO] [stdout] 6195df14517a9198a49cf21118b0fcd392b011fa8825915500683c3ce6321175