[INFO] updating cached repository antage/netcat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/antage/netcat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/antage/netcat" "work/ex/beta-1.38-1/sources/1.37.0/gh/antage/netcat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/antage/netcat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/antage/netcat" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/antage/netcat"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/antage/netcat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 17229a5c79e074b37a3836deb24e24b178f091b0
[INFO] sha for GitHub repo antage/netcat: 17229a5c79e074b37a3836deb24e24b178f091b0
[INFO] validating manifest of antage/netcat 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 antage/netcat 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 antage/netcat
[INFO] finished frobbing antage/netcat
[INFO] frobbed toml for antage/netcat written to work/ex/beta-1.38-1/sources/1.37.0/gh/antage/netcat/Cargo.toml
[INFO] started frobbing antage/netcat
[INFO] finished frobbing antage/netcat
[INFO] frobbed toml for antage/netcat written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/antage/netcat/Cargo.toml
[INFO] crate antage/netcat 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/antage/netcat/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 antage/netcat 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-7/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/antage/netcat:/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] 5aed441c0c8ceb2a4792f7c9d7f80b48051d29879980c056e76ea495e58b85cc
[INFO] running `"docker" "start" "-a" "5aed441c0c8ceb2a4792f7c9d7f80b48051d29879980c056e76ea495e58b85cc"`
[INFO] [stderr]    Compiling netcat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/netcat/error.rs:39:29
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "5aed441c0c8ceb2a4792f7c9d7f80b48051d29879980c056e76ea495e58b85cc"`
[INFO] running `"docker" "rm" "-f" "5aed441c0c8ceb2a4792f7c9d7f80b48051d29879980c056e76ea495e58b85cc"`
[INFO] [stdout] 5aed441c0c8ceb2a4792f7c9d7f80b48051d29879980c056e76ea495e58b85cc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/antage/netcat:/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] a642bcb21b3a658e7d8bc81b862406c940570ffb6354455abc2513704ec449be
[INFO] running `"docker" "start" "-a" "a642bcb21b3a658e7d8bc81b862406c940570ffb6354455abc2513704ec449be"`
[INFO] [stderr]    Compiling netcat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/netcat/error.rs:39:29
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn cause(&self) -> Option<&std::error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `"docker" "inspect" "a642bcb21b3a658e7d8bc81b862406c940570ffb6354455abc2513704ec449be"`
[INFO] running `"docker" "rm" "-f" "a642bcb21b3a658e7d8bc81b862406c940570ffb6354455abc2513704ec449be"`
[INFO] [stdout] a642bcb21b3a658e7d8bc81b862406c940570ffb6354455abc2513704ec449be
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/antage/netcat:/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] 1e1e10eb169cf4e449219141448fe1d11e29284cf754d9c97b2af4e7f07503da
[INFO] running `"docker" "start" "-a" "1e1e10eb169cf4e449219141448fe1d11e29284cf754d9c97b2af4e7f07503da"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/netcat-3f05307898b98c46
[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" "1e1e10eb169cf4e449219141448fe1d11e29284cf754d9c97b2af4e7f07503da"`
[INFO] running `"docker" "rm" "-f" "1e1e10eb169cf4e449219141448fe1d11e29284cf754d9c97b2af4e7f07503da"`
[INFO] [stdout] 1e1e10eb169cf4e449219141448fe1d11e29284cf754d9c97b2af4e7f07503da