[INFO] updating cached repository skade/htwg-scratchpad
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/skade/htwg-scratchpad
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/htwg-scratchpad" "work/ex/beta-1.37-6/sources/1.36.0/gh/skade/htwg-scratchpad"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/skade/htwg-scratchpad'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/htwg-scratchpad" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/skade/htwg-scratchpad"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/skade/htwg-scratchpad'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e1144441bb210af318d7e23caf586938df7ce40a
[INFO] sha for GitHub repo skade/htwg-scratchpad: e1144441bb210af318d7e23caf586938df7ce40a
[INFO] validating manifest of skade/htwg-scratchpad 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 skade/htwg-scratchpad 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 skade/htwg-scratchpad
[INFO] finished frobbing skade/htwg-scratchpad
[INFO] frobbed toml for skade/htwg-scratchpad written to work/ex/beta-1.37-6/sources/1.36.0/gh/skade/htwg-scratchpad/Cargo.toml
[INFO] started frobbing skade/htwg-scratchpad
[INFO] finished frobbing skade/htwg-scratchpad
[INFO] frobbed toml for skade/htwg-scratchpad written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/skade/htwg-scratchpad/Cargo.toml
[INFO] crate skade/htwg-scratchpad 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 skade/htwg-scratchpad against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/skade/htwg-scratchpad:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 8778da0e095243f0b84621b14e9088d5daa17fe49f093ee1ab8bc38ceffd63e1
[INFO] running `"docker" "start" "-a" "8778da0e095243f0b84621b14e9088d5daa17fe49f093ee1ab8bc38ceffd63e1"`
[INFO] [stderr]    Compiling net2 v0.2.29
[INFO] [stderr]    Compiling tokio-timer v0.1.1
[INFO] [stderr]    Compiling futures-cpupool v0.1.5
[INFO] [stderr]    Compiling tokio-io v0.1.1
[INFO] [stderr]    Compiling mio v0.6.7
[INFO] [stderr]    Compiling tokio-core v0.1.7
[INFO] [stderr]    Compiling htwg-scratchpad v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/read_file.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     cpu_pool.spawn(read_file).wait();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pass`
[INFO] [stderr]   --> src/bin/select.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let pass = 900;
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_pass`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.67s
[INFO] running `"docker" "inspect" "8778da0e095243f0b84621b14e9088d5daa17fe49f093ee1ab8bc38ceffd63e1"`
[INFO] running `"docker" "rm" "-f" "8778da0e095243f0b84621b14e9088d5daa17fe49f093ee1ab8bc38ceffd63e1"`
[INFO] [stdout] 8778da0e095243f0b84621b14e9088d5daa17fe49f093ee1ab8bc38ceffd63e1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/skade/htwg-scratchpad:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b5ff62a9ff1a48fdb1273642dae0af188036a8f807edc0deaf74692304d6f27c
[INFO] running `"docker" "start" "-a" "b5ff62a9ff1a48fdb1273642dae0af188036a8f807edc0deaf74692304d6f27c"`
[INFO] [stderr]    Compiling htwg-scratchpad v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `pass`
[INFO] [stderr]   --> src/bin/select.rs:20:9
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let pass = 900;
[INFO] [stderr]    |         ^^^^ help: consider prefixing with an underscore: `_pass`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/bin/read_file.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     cpu_pool.spawn(read_file).wait();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.65s
[INFO] running `"docker" "inspect" "b5ff62a9ff1a48fdb1273642dae0af188036a8f807edc0deaf74692304d6f27c"`
[INFO] running `"docker" "rm" "-f" "b5ff62a9ff1a48fdb1273642dae0af188036a8f807edc0deaf74692304d6f27c"`
[INFO] [stdout] b5ff62a9ff1a48fdb1273642dae0af188036a8f807edc0deaf74692304d6f27c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/skade/htwg-scratchpad:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] b7e76814a1c31573c6037bd902f200ddcdeb478bba3a62ea27926fcbb61b0bec
[INFO] running `"docker" "start" "-a" "b7e76814a1c31573c6037bd902f200ddcdeb478bba3a62ea27926fcbb61b0bec"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/htwg_scratchpad-8d0d9ed223767153
[INFO] [stderr]      Running /opt/crater/target/debug/deps/and_then-08a38ccfdd7eaa49
[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] [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] [stderr]      Running /opt/crater/target/debug/deps/cpupool-e534e57810ee1605
[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] [stderr]      Running /opt/crater/target/debug/deps/fork_join-3379447f0830bd8b
[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] [stderr]      Running /opt/crater/target/debug/deps/read_file-86f78fe28c0ff5e2
[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] [stderr]      Running /opt/crater/target/debug/deps/select-ca0a2d784a072097
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/select_combined-ca7074e026436250
[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] [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] [stderr]      Running /opt/crater/target/debug/deps/select_tokio-1230834f007f846f
[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] [stderr]      Running /opt/crater/target/debug/deps/tokio-100506a29ebcc97e
[INFO] [stderr]    Doc-tests htwg-scratchpad
[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] [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" "b7e76814a1c31573c6037bd902f200ddcdeb478bba3a62ea27926fcbb61b0bec"`
[INFO] running `"docker" "rm" "-f" "b7e76814a1c31573c6037bd902f200ddcdeb478bba3a62ea27926fcbb61b0bec"`
[INFO] [stdout] b7e76814a1c31573c6037bd902f200ddcdeb478bba3a62ea27926fcbb61b0bec