[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-1.38-1/sources/1.37.0/gh/skade/htwg-scratchpad"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/skade/htwg-scratchpad'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skade/htwg-scratchpad" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skade/htwg-scratchpad"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of skade/htwg-scratchpad on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing skade/htwg-scratchpad against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 85eb726da57a478da232ce04b2ebc08aaccfc5215e4e651fcd8dd1c16cb1327c
[INFO] running `"docker" "start" "-a" "85eb726da57a478da232ce04b2ebc08aaccfc5215e4e651fcd8dd1c16cb1327c"`
[INFO] [stderr]    Compiling futures v0.1.13
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling num_cpus v1.4.0
[INFO] [stderr]    Compiling net2 v0.2.29
[INFO] [stderr]    Compiling bytes v0.4.3
[INFO] [stderr]    Compiling mio v0.6.7
[INFO] [stderr]    Compiling tokio-io v0.1.1
[INFO] [stderr]    Compiling futures-cpupool v0.1.5
[INFO] [stderr]    Compiling tokio-timer v0.1.1
[INFO] [stderr]    Compiling tokio-core v0.1.7
[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 13.83s
[INFO] running `"docker" "inspect" "85eb726da57a478da232ce04b2ebc08aaccfc5215e4e651fcd8dd1c16cb1327c"`
[INFO] running `"docker" "rm" "-f" "85eb726da57a478da232ce04b2ebc08aaccfc5215e4e651fcd8dd1c16cb1327c"`
[INFO] [stdout] 85eb726da57a478da232ce04b2ebc08aaccfc5215e4e651fcd8dd1c16cb1327c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 09a38c19089ad5ca2d2cd12721da35b9679d147db64dbb457b11873bdd470a5b
[INFO] running `"docker" "start" "-a" "09a38c19089ad5ca2d2cd12721da35b9679d147db64dbb457b11873bdd470a5b"`
[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 1.62s
[INFO] running `"docker" "inspect" "09a38c19089ad5ca2d2cd12721da35b9679d147db64dbb457b11873bdd470a5b"`
[INFO] running `"docker" "rm" "-f" "09a38c19089ad5ca2d2cd12721da35b9679d147db64dbb457b11873bdd470a5b"`
[INFO] [stdout] 09a38c19089ad5ca2d2cd12721da35b9679d147db64dbb457b11873bdd470a5b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 15eb71e446c34a7921841f13aba2831dd2163e5eb48bfca9f7306de9e1c5e372
[INFO] running `"docker" "start" "-a" "15eb71e446c34a7921841f13aba2831dd2163e5eb48bfca9f7306de9e1c5e372"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/htwg_scratchpad-6340e550f26f31a8
[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/and_then-990e755b268ee0ee
[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-6bd12a655f164419
[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-dac69122b62c5c81
[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-6aa37fee97ae462c
[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-78310125d4081d6d
[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_combined-62e830cd90e84166
[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-6a1f4a6b7e1bffd6
[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-ef02775ac8fc6a4e
[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]    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] running `"docker" "inspect" "15eb71e446c34a7921841f13aba2831dd2163e5eb48bfca9f7306de9e1c5e372"`
[INFO] running `"docker" "rm" "-f" "15eb71e446c34a7921841f13aba2831dd2163e5eb48bfca9f7306de9e1c5e372"`
[INFO] [stdout] 15eb71e446c34a7921841f13aba2831dd2163e5eb48bfca9f7306de9e1c5e372