[INFO] crate sacn 0.4.4 is already in cache
[INFO] extracting crate sacn 0.4.4 into work/ex/beta-1.38-1/sources/1.37.0/reg/sacn/0.4.4
[INFO] extracting crate sacn 0.4.4 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sacn/0.4.4
[INFO] validating manifest of sacn-0.4.4 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 sacn-0.4.4 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 sacn-0.4.4
[INFO] finished frobbing sacn-0.4.4
[INFO] frobbed toml for sacn-0.4.4 written to work/ex/beta-1.38-1/sources/1.37.0/reg/sacn/0.4.4/Cargo.toml
[INFO] started frobbing sacn-0.4.4
[INFO] finished frobbing sacn-0.4.4
[INFO] frobbed toml for sacn-0.4.4 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sacn/0.4.4/Cargo.toml
[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] building sacn-0.4.4 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-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sacn/0.4.4:/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] 42a3391d8860acc524ea0518e6e61054c964ea9dbecc9549a4e32fcc5115d846
[INFO] running `"docker" "start" "-a" "42a3391d8860acc524ea0518e6e61054c964ea9dbecc9549a4e32fcc5115d846"`
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling sacn v0.4.4 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:71:32
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:120:32
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.72s
[INFO] running `"docker" "inspect" "42a3391d8860acc524ea0518e6e61054c964ea9dbecc9549a4e32fcc5115d846"`
[INFO] running `"docker" "rm" "-f" "42a3391d8860acc524ea0518e6e61054c964ea9dbecc9549a4e32fcc5115d846"`
[INFO] [stdout] 42a3391d8860acc524ea0518e6e61054c964ea9dbecc9549a4e32fcc5115d846
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/sacn/0.4.4:/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] 393c476939806f1c8fc8cbc565e75a6eed8b4df904417a94f16e98ceccb3844d
[INFO] running `"docker" "start" "-a" "393c476939806f1c8fc8cbc565e75a6eed8b4df904417a94f16e98ceccb3844d"`
[INFO] [stderr]    Compiling sacn v0.4.4 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:71:32
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/error.rs:120:32
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `"docker" "inspect" "393c476939806f1c8fc8cbc565e75a6eed8b4df904417a94f16e98ceccb3844d"`
[INFO] running `"docker" "rm" "-f" "393c476939806f1c8fc8cbc565e75a6eed8b4df904417a94f16e98ceccb3844d"`
[INFO] [stdout] 393c476939806f1c8fc8cbc565e75a6eed8b4df904417a94f16e98ceccb3844d