[INFO] crate envoption 0.2.1 is already in cache
[INFO] extracting crate envoption 0.2.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/envoption/0.2.1
[INFO] extracting crate envoption 0.2.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/envoption/0.2.1
[INFO] validating manifest of envoption-0.2.1 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 envoption-0.2.1 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 envoption-0.2.1
[INFO] finished frobbing envoption-0.2.1
[INFO] frobbed toml for envoption-0.2.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/envoption/0.2.1/Cargo.toml
[INFO] started frobbing envoption-0.2.1
[INFO] finished frobbing envoption-0.2.1
[INFO] frobbed toml for envoption-0.2.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/envoption/0.2.1/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] testing envoption-0.2.1 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/envoption/0.2.1:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 5c6ecdb26e21dc1bb8c4c3a62a25f34cb7a0a4a14e65aab7189f27b6672bfd3a
[INFO] running `"docker" "start" "-a" "5c6ecdb26e21dc1bb8c4c3a62a25f34cb7a0a4a14e65aab7189f27b6672bfd3a"`
[INFO] [stderr]    Compiling envoption v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:43:32
[INFO] [stderr]    |
[INFO] [stderr] 43 |     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]     Finished dev [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `"docker" "inspect" "5c6ecdb26e21dc1bb8c4c3a62a25f34cb7a0a4a14e65aab7189f27b6672bfd3a"`
[INFO] running `"docker" "rm" "-f" "5c6ecdb26e21dc1bb8c4c3a62a25f34cb7a0a4a14e65aab7189f27b6672bfd3a"`
[INFO] [stdout] 5c6ecdb26e21dc1bb8c4c3a62a25f34cb7a0a4a14e65aab7189f27b6672bfd3a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/envoption/0.2.1:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e2663052b7c56034cdbd72359c4d902a5f473a63be204ce36517106bcd57a412
[INFO] running `"docker" "start" "-a" "e2663052b7c56034cdbd72359c4d902a5f473a63be204ce36517106bcd57a412"`
[INFO] [stderr]    Compiling envoption v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:43:32
[INFO] [stderr]    |
[INFO] [stderr] 43 |     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]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "e2663052b7c56034cdbd72359c4d902a5f473a63be204ce36517106bcd57a412"`
[INFO] running `"docker" "rm" "-f" "e2663052b7c56034cdbd72359c4d902a5f473a63be204ce36517106bcd57a412"`
[INFO] [stdout] e2663052b7c56034cdbd72359c4d902a5f473a63be204ce36517106bcd57a412
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/envoption/0.2.1:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 7fbed778acab9407a684e8379d7bd159adf1d071edc8d11e2f67a2647943b1a1
[INFO] running `"docker" "start" "-a" "7fbed778acab9407a684e8379d7bd159adf1d071edc8d11e2f67a2647943b1a1"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/envoption-8837754db5ae4e4d
[INFO] [stdout] 
[INFO] [stdout] running 24 tests
[INFO] [stdout] test tests::get::var_is_present::default_value ... ok
[INFO] [stdout] test tests::get::var_is_present::default_value_str ... ok
[INFO] [stdout] test tests::get::var_is_present::default_value_usize ... ok
[INFO] [stdout] test tests::get::var_not_present::default_value_str ... ok
[INFO] [stdout] test tests::get::var_not_present::default_value_usize ... ok
[INFO] [stdout] test tests::get::var_is_present::required_usize ... ok
[INFO] [stdout] test tests::get::var_not_present::default_value ... ok
[INFO] [stdout] test tests::get::var_is_present::required ... ok
[INFO] [stdout] test tests::get::var_is_present::optional ... ok
[INFO] [stdout] test tests::get::var_is_present::optional_usize ... ok
[INFO] [stdout] test tests::get::var_not_present::optional ... ok
[INFO] [stdout] test tests::get::var_not_present::optional_usize ... ok
[INFO] [stdout] test tests::get::var_not_present::required ... ok
[INFO] [stdout] test tests::get::var_not_present::required_usize ... ok
[INFO] [stdout] test tests::optional::var_is_present ... ok
[INFO] [stdout] test tests::optional::var_not_present ... ok
[INFO] [stdout] test tests::require::var_is_present ... ok
[INFO] [stdout] test tests::require::var_not_present ... ok
[INFO] [stdout] test tests::with_default::var_is_present::default_str ... ok
[INFO] [stdout] test tests::with_default::var_is_present::default_string ... ok
[INFO] [stdout] test tests::with_default::var_is_present::default_usize ... ok
[INFO] [stdout] test tests::with_default::var_not_present::default_str ... ok
[INFO] [stdout] test tests::with_default::var_not_present::with_default_usize ... ok
[INFO] [stdout] test tests::with_default::var_not_present::default_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests envoption
[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" "7fbed778acab9407a684e8379d7bd159adf1d071edc8d11e2f67a2647943b1a1"`
[INFO] running `"docker" "rm" "-f" "7fbed778acab9407a684e8379d7bd159adf1d071edc8d11e2f67a2647943b1a1"`
[INFO] [stdout] 7fbed778acab9407a684e8379d7bd159adf1d071edc8d11e2f67a2647943b1a1