[INFO] updating cached repository szhongren/rustbookv2
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/szhongren/rustbookv2
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/szhongren/rustbookv2" "work/ex/beta-1.37-6/sources/1.36.0/gh/szhongren/rustbookv2"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/szhongren/rustbookv2'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/szhongren/rustbookv2" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/szhongren/rustbookv2"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/szhongren/rustbookv2'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8534333cc27bf65741c823c98fcd03235b40ada7
[INFO] sha for GitHub repo szhongren/rustbookv2: 8534333cc27bf65741c823c98fcd03235b40ada7
[INFO] validating manifest of szhongren/rustbookv2 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 szhongren/rustbookv2 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 szhongren/rustbookv2
[INFO] finished frobbing szhongren/rustbookv2
[INFO] frobbed toml for szhongren/rustbookv2 written to work/ex/beta-1.37-6/sources/1.36.0/gh/szhongren/rustbookv2/Cargo.toml
[INFO] started frobbing szhongren/rustbookv2
[INFO] finished frobbing szhongren/rustbookv2
[INFO] frobbed toml for szhongren/rustbookv2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/szhongren/rustbookv2/Cargo.toml
[INFO] crate szhongren/rustbookv2 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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing szhongren/rustbookv2 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-2/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/szhongren/rustbookv2:/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] 53bd3e7c26fff0bd0e38c796eccfa885ef11b87f99de21f256b789d4769333fc
[INFO] running `"docker" "start" "-a" "53bd3e7c26fff0bd0e38c796eccfa885ef11b87f99de21f256b789d4769333fc"`
[INFO] [stderr]    Compiling rustbook v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `PartialOrd` is imported redundantly
[INFO] [stderr]   --> src/section10.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     use std::cmp::PartialOrd;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `"docker" "inspect" "53bd3e7c26fff0bd0e38c796eccfa885ef11b87f99de21f256b789d4769333fc"`
[INFO] running `"docker" "rm" "-f" "53bd3e7c26fff0bd0e38c796eccfa885ef11b87f99de21f256b789d4769333fc"`
[INFO] [stdout] 53bd3e7c26fff0bd0e38c796eccfa885ef11b87f99de21f256b789d4769333fc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/szhongren/rustbookv2:/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] a7bd303386254967340524fcfb93719c807a5b91e3e657c4e2a8fe0f16d7173d
[INFO] running `"docker" "start" "-a" "a7bd303386254967340524fcfb93719c807a5b91e3e657c4e2a8fe0f16d7173d"`
[INFO] [stderr]    Compiling rustbook v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `PartialOrd` is imported redundantly
[INFO] [stderr]   --> src/section10.rs:36:9
[INFO] [stderr]    |
[INFO] [stderr] 36 |     use std::cmp::PartialOrd;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `"docker" "inspect" "a7bd303386254967340524fcfb93719c807a5b91e3e657c4e2a8fe0f16d7173d"`
[INFO] running `"docker" "rm" "-f" "a7bd303386254967340524fcfb93719c807a5b91e3e657c4e2a8fe0f16d7173d"`
[INFO] [stdout] a7bd303386254967340524fcfb93719c807a5b91e3e657c4e2a8fe0f16d7173d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/szhongren/rustbookv2:/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] 6bc5e86522ec1e5182706b968b66cc4c33f5fc2c0dd49b99789d949e1040d912
[INFO] running `"docker" "start" "-a" "6bc5e86522ec1e5182706b968b66cc4c33f5fc2c0dd49b99789d949e1040d912"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rustbook-d2ae16419eb07b5a
[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" "6bc5e86522ec1e5182706b968b66cc4c33f5fc2c0dd49b99789d949e1040d912"`
[INFO] running `"docker" "rm" "-f" "6bc5e86522ec1e5182706b968b66cc4c33f5fc2c0dd49b99789d949e1040d912"`
[INFO] [stdout] 6bc5e86522ec1e5182706b968b66cc4c33f5fc2c0dd49b99789d949e1040d912