[INFO] crate netstring 0.4.1 is already in cache
[INFO] extracting crate netstring 0.4.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/netstring/0.4.1
[INFO] extracting crate netstring 0.4.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/netstring/0.4.1
[INFO] validating manifest of netstring-0.4.1 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 netstring-0.4.1 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 netstring-0.4.1
[INFO] finished frobbing netstring-0.4.1
[INFO] frobbed toml for netstring-0.4.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/netstring/0.4.1/Cargo.toml
[INFO] started frobbing netstring-0.4.1
[INFO] finished frobbing netstring-0.4.1
[INFO] frobbed toml for netstring-0.4.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/netstring/0.4.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 netstring-0.4.1 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-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/netstring/0.4.1:/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] a6fb1b95e997463fdae6603d43e10ffc4e61191af3cec0667d29b985ce9d0751
[INFO] running `"docker" "start" "-a" "a6fb1b95e997463fdae6603d43e10ffc4e61191af3cec0667d29b985ce9d0751"`
[INFO] [stderr]    Compiling netstring v0.4.1 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/channel.rs:174:27
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 match err.cause() {
[INFO] [stderr]     |                           ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "a6fb1b95e997463fdae6603d43e10ffc4e61191af3cec0667d29b985ce9d0751"`
[INFO] running `"docker" "rm" "-f" "a6fb1b95e997463fdae6603d43e10ffc4e61191af3cec0667d29b985ce9d0751"`
[INFO] [stdout] a6fb1b95e997463fdae6603d43e10ffc4e61191af3cec0667d29b985ce9d0751
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/netstring/0.4.1:/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] f3adad91ba990db3a59f37697a14ffd0b65c8058fc53da4879dab42a85dd434d
[INFO] running `"docker" "start" "-a" "f3adad91ba990db3a59f37697a14ffd0b65c8058fc53da4879dab42a85dd434d"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling netstring v0.4.1 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/channel.rs:174:27
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 match err.cause() {
[INFO] [stderr]     |                           ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.95s
[INFO] running `"docker" "inspect" "f3adad91ba990db3a59f37697a14ffd0b65c8058fc53da4879dab42a85dd434d"`
[INFO] running `"docker" "rm" "-f" "f3adad91ba990db3a59f37697a14ffd0b65c8058fc53da4879dab42a85dd434d"`
[INFO] [stdout] f3adad91ba990db3a59f37697a14ffd0b65c8058fc53da4879dab42a85dd434d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/netstring/0.4.1:/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] 54364d5a3f39327c4deb46a3f559eb64b8a4d5373f9997f6c905a6b5aa85fbd8
[INFO] running `"docker" "start" "-a" "54364d5a3f39327c4deb46a3f559eb64b8a4d5373f9997f6c905a6b5aa85fbd8"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/netstring-1024af00ef9b9e9b
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::basic_write ... ok
[INFO] [stdout] test tests::basic_read ... ok
[INFO] [stdout] test channel::tests::reader ... ok
[INFO] [stdout] test tests::multiple ... ok
[INFO] [stdout] test channel::tests::send_last ... ok
[INFO] [stdout] test channel::tests::send ... ok
[INFO] [stdout] test tests::shorter ... ok
[INFO] [stdout] test tests::invalid_delimiter ... ok
[INFO] [stdout] test tests::longer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests netstring
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/channel.rs - channel::Channel::send_last (line 146) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "54364d5a3f39327c4deb46a3f559eb64b8a4d5373f9997f6c905a6b5aa85fbd8"`
[INFO] running `"docker" "rm" "-f" "54364d5a3f39327c4deb46a3f559eb64b8a4d5373f9997f6c905a6b5aa85fbd8"`
[INFO] [stdout] 54364d5a3f39327c4deb46a3f559eb64b8a4d5373f9997f6c905a6b5aa85fbd8