[INFO] updating cached repository penta2tech/pdb
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/penta2tech/pdb
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/penta2tech/pdb" "work/ex/beta-1.37-6/sources/1.36.0/gh/penta2tech/pdb"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/penta2tech/pdb'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/penta2tech/pdb" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/penta2tech/pdb"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/penta2tech/pdb'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0c778f19bfa2ec2301923d41725379261488eb30
[INFO] sha for GitHub repo penta2tech/pdb: 0c778f19bfa2ec2301923d41725379261488eb30
[INFO] validating manifest of penta2tech/pdb 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 penta2tech/pdb 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 penta2tech/pdb
[INFO] finished frobbing penta2tech/pdb
[INFO] frobbed toml for penta2tech/pdb written to work/ex/beta-1.37-6/sources/1.36.0/gh/penta2tech/pdb/Cargo.toml
[INFO] started frobbing penta2tech/pdb
[INFO] finished frobbing penta2tech/pdb
[INFO] frobbed toml for penta2tech/pdb written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/penta2tech/pdb/Cargo.toml
[INFO] crate penta2tech/pdb 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 penta2tech/pdb 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-0/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/penta2tech/pdb:/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] d10747871599a80c0ff34895762b2f5a48529f40640a202b3755d4949625890a
[INFO] running `"docker" "start" "-a" "d10747871599a80c0ff34895762b2f5a48529f40640a202b3755d4949625890a"`
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]    Compiling pdb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     attach(pid);
[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 `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     kill(pid, Signal::SIGSTOP);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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 9.97s
[INFO] running `"docker" "inspect" "d10747871599a80c0ff34895762b2f5a48529f40640a202b3755d4949625890a"`
[INFO] running `"docker" "rm" "-f" "d10747871599a80c0ff34895762b2f5a48529f40640a202b3755d4949625890a"`
[INFO] [stdout] d10747871599a80c0ff34895762b2f5a48529f40640a202b3755d4949625890a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/penta2tech/pdb:/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] 17ba816d219adc5a29bac03a1d9d933ccd951a78a655b57e01ee8bfc6f5be468
[INFO] running `"docker" "start" "-a" "17ba816d219adc5a29bac03a1d9d933ccd951a78a655b57e01ee8bfc6f5be468"`
[INFO] [stderr]    Compiling pdb v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     attach(pid);
[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 `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     kill(pid, Signal::SIGSTOP);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[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 0.74s
[INFO] running `"docker" "inspect" "17ba816d219adc5a29bac03a1d9d933ccd951a78a655b57e01ee8bfc6f5be468"`
[INFO] running `"docker" "rm" "-f" "17ba816d219adc5a29bac03a1d9d933ccd951a78a655b57e01ee8bfc6f5be468"`
[INFO] [stdout] 17ba816d219adc5a29bac03a1d9d933ccd951a78a655b57e01ee8bfc6f5be468
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/penta2tech/pdb:/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] aa47c4a4d00b1a6642147b23c8878ce4a4dd59acddd78711e4b130eb5caa4c47
[INFO] running `"docker" "start" "-a" "aa47c4a4d00b1a6642147b23c8878ce4a4dd59acddd78711e4b130eb5caa4c47"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/pdb-3e3db9be09b672d8
[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" "aa47c4a4d00b1a6642147b23c8878ce4a4dd59acddd78711e4b130eb5caa4c47"`
[INFO] running `"docker" "rm" "-f" "aa47c4a4d00b1a6642147b23c8878ce4a4dd59acddd78711e4b130eb5caa4c47"`
[INFO] [stdout] aa47c4a4d00b1a6642147b23c8878ce4a4dd59acddd78711e4b130eb5caa4c47