[INFO] crate ilp-packet 0.3.0 is already in cache
[INFO] extracting crate ilp-packet 0.3.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/ilp-packet/0.3.0
[INFO] extracting crate ilp-packet 0.3.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ilp-packet/0.3.0
[INFO] validating manifest of ilp-packet-0.3.0 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 ilp-packet-0.3.0 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 ilp-packet-0.3.0
[INFO] finished frobbing ilp-packet-0.3.0
[INFO] frobbed toml for ilp-packet-0.3.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/ilp-packet/0.3.0/Cargo.toml
[INFO] started frobbing ilp-packet-0.3.0
[INFO] finished frobbing ilp-packet-0.3.0
[INFO] frobbed toml for ilp-packet-0.3.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/ilp-packet/0.3.0/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 ilp-packet-0.3.0 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-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ilp-packet/0.3.0:/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] 5fb702c0ab8f147a932d3ecd12f19d298cc9ab42627c0f7e62905f2b85308e62
[INFO] running `"docker" "start" "-a" "5fb702c0ab8f147a932d3ecd12f19d298cc9ab42627c0f7e62905f2b85308e62"`
[INFO] [stderr]    Compiling ilp-packet v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning[E0515]: cannot return value referencing temporary value
[INFO] [stderr]   --> src/oer.rs:83:16
[INFO] [stderr]    |
[INFO] [stderr] 83 |         return Ok(&empty.to_owned());
[INFO] [stderr]    |                ^^^^----------------^
[INFO] [stderr]    |                |   |
[INFO] [stderr]    |                |   temporary value created here
[INFO] [stderr]    |                returns a value referencing data owned by the current function
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `"docker" "inspect" "5fb702c0ab8f147a932d3ecd12f19d298cc9ab42627c0f7e62905f2b85308e62"`
[INFO] running `"docker" "rm" "-f" "5fb702c0ab8f147a932d3ecd12f19d298cc9ab42627c0f7e62905f2b85308e62"`
[INFO] [stdout] 5fb702c0ab8f147a932d3ecd12f19d298cc9ab42627c0f7e62905f2b85308e62
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ilp-packet/0.3.0:/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] 52f98dd6c7fd6e7c415d381946f5241b98fd3ae7db033adab809e09490c878f1
[INFO] running `"docker" "start" "-a" "52f98dd6c7fd6e7c415d381946f5241b98fd3ae7db033adab809e09490c878f1"`
[INFO] [stderr]    Compiling ilp-packet v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] warning[E0515]: cannot return value referencing temporary value
[INFO] [stderr]   --> src/oer.rs:83:16
[INFO] [stderr]    |
[INFO] [stderr] 83 |         return Ok(&empty.to_owned());
[INFO] [stderr]    |                ^^^^----------------^
[INFO] [stderr]    |                |   |
[INFO] [stderr]    |                |   temporary value created here
[INFO] [stderr]    |                returns a value referencing data owned by the current function
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]    = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.30s
[INFO] running `"docker" "inspect" "52f98dd6c7fd6e7c415d381946f5241b98fd3ae7db033adab809e09490c878f1"`
[INFO] running `"docker" "rm" "-f" "52f98dd6c7fd6e7c415d381946f5241b98fd3ae7db033adab809e09490c878f1"`
[INFO] [stdout] 52f98dd6c7fd6e7c415d381946f5241b98fd3ae7db033adab809e09490c878f1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/ilp-packet/0.3.0:/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] 0f43f34e43f5e875b0f9d960bec3d629fb15241abf75ec485498d9e6c3c60c2d
[INFO] running `"docker" "start" "-a" "0f43f34e43f5e875b0f9d960bec3d629fb15241abf75ec485498d9e6c3c60c2d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ilp_packet-a422e378794753f9
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test packet::tests::ilp_reject::from_bytes ... ok
[INFO] [stdout] test oer::standalone::it_writes_var_octet_strings ... ok
[INFO] [stdout] test oer::standalone::it_reads_var_octet_strings ... ok
[INFO] [stdout] test packet::tests::ilp_fulfill::to_bytes ... ok
[INFO] [stdout] test packet::tests::ilp_prepare::to_bytes ... ok
[INFO] [stdout] test packet::tests::ilp_fulfill::from_bytes ... ok
[INFO] [stdout] test packet::tests::ilp_prepare::from_bytes ... ok
[INFO] [stdout] test packet::tests::ilp_reject::to_bytes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ilp-packet
[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" "0f43f34e43f5e875b0f9d960bec3d629fb15241abf75ec485498d9e6c3c60c2d"`
[INFO] running `"docker" "rm" "-f" "0f43f34e43f5e875b0f9d960bec3d629fb15241abf75ec485498d9e6c3c60c2d"`
[INFO] [stdout] 0f43f34e43f5e875b0f9d960bec3d629fb15241abf75ec485498d9e6c3c60c2d