[INFO] fetching crate snafu 0.4.3...
[INFO] extracting crate snafu 0.4.3 into work/ex/beta-1.37-6/sources/1.36.0/reg/snafu/0.4.3
[INFO] extracting crate snafu 0.4.3 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/snafu/0.4.3
[INFO] validating manifest of snafu-0.4.3 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 snafu-0.4.3 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 snafu-0.4.3
[INFO] finished frobbing snafu-0.4.3
[INFO] frobbed toml for snafu-0.4.3 written to work/ex/beta-1.37-6/sources/1.36.0/reg/snafu/0.4.3/Cargo.toml
[INFO] started frobbing snafu-0.4.3
[INFO] finished frobbing snafu-0.4.3
[INFO] frobbed toml for snafu-0.4.3 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/snafu/0.4.3/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pin-project v0.3.4
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing snafu-0.4.3 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-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/snafu/0.4.3:/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] f1361115946100aaa9f0be850c33fea9a9c8f46ea9762d9400d1d34d8d33a10e
[INFO] running `"docker" "start" "-a" "f1361115946100aaa9f0be850c33fea9a9c8f46ea9762d9400d1d34d8d33a10e"`
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling snafu-derive v0.4.3
[INFO] [stderr]    Compiling snafu v0.4.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.30s
[INFO] running `"docker" "inspect" "f1361115946100aaa9f0be850c33fea9a9c8f46ea9762d9400d1d34d8d33a10e"`
[INFO] running `"docker" "rm" "-f" "f1361115946100aaa9f0be850c33fea9a9c8f46ea9762d9400d1d34d8d33a10e"`
[INFO] [stdout] f1361115946100aaa9f0be850c33fea9a9c8f46ea9762d9400d1d34d8d33a10e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/snafu/0.4.3:/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] e9a87441a45fa56ff76ff0e6cecfb59ecfe278a829827692c97cc06d7d6970b3
[INFO] running `"docker" "start" "-a" "e9a87441a45fa56ff76ff0e6cecfb59ecfe278a829827692c97cc06d7d6970b3"`
[INFO] [stderr]    Compiling snafu v0.4.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.42s
[INFO] running `"docker" "inspect" "e9a87441a45fa56ff76ff0e6cecfb59ecfe278a829827692c97cc06d7d6970b3"`
[INFO] running `"docker" "rm" "-f" "e9a87441a45fa56ff76ff0e6cecfb59ecfe278a829827692c97cc06d7d6970b3"`
[INFO] [stdout] e9a87441a45fa56ff76ff0e6cecfb59ecfe278a829827692c97cc06d7d6970b3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/snafu/0.4.3:/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] 0d666c30f96b6eec1f6dae6793037f2718263b36ab5ca1e3426658ac2ac472d0
[INFO] running `"docker" "start" "-a" "0d666c30f96b6eec1f6dae6793037f2718263b36ab5ca1e3426658ac2ac472d0"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snafu-02b837766db14638
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backtrace-65e12d20d76f33a6
[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] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test display_can_access_backtrace ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backtrace_attributes-8614fc6474427d8e
[INFO] [stdout] test errors_with_sources_can_have_backtraces ... ok
[INFO] [stdout] test errors_with_sources_and_other_info_can_have_backtraces ... ok
[INFO] [stdout] test has_a_backtrace ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backtrace_delegation-dd59e5f3c1de2157
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test backtrace_comes_from_inside_the_house ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/basic-470669b66d3553d8
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/boxed_error_trait_object-1286d26a84c57aa3
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/default_error_display-5cf2db7e458a5dc7
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test default_error_display ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/doc_comment-74edb7a0b0923a17
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test display_is_stronger_than_doc_comment ... ok
[INFO] [stdout] test implements_error ... ok
[INFO] [stdout] test uses_doc_comment ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/generics-f2f14fa6538657df
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test bounds::inline::implements_error ... ok
[INFO] [stdout] test bounds::where_clause::implements_error ... ok
[INFO] [stdout] test implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/generics_with_default-7907fc49c34b5d74
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test default_with_lifetime::implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mapping_result_without_try_operator-2e613bdd66467e23
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test can_be_used_without_question_mark ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/name_conflicts-4516b3560cab5e1e
[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] [stderr]      Running /opt/crater/target/debug/deps/opaque-9a509ebf45805c12
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/options-68224d7a3b52c754
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/recursive_error-0591ed595baff862
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/send_between_threads-abafa1fc22047bfe
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test implements_thread_safe_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/source_attributes-f2f99e98fa7eee0f
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test transformation::implements_error ... ok
[INFO] [stdout] test transformation::api_implements_error ... ok
[INFO] [stdout] test enabling::implements_error ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/visibility-a22c0215e6371148
[INFO] [stdout] running 3 tests
[INFO] [stdout] test outer::can_set_default_visibility ... ok
[INFO] [stdout] test outer::can_set_visibility ... ok
[INFO] [stdout] test can_set_default_visibility ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests snafu
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::comparison::failure (line 123) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::attributes (line 97) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::attributes (line 173) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::attributes (line 77) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::attributes (line 125) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::attributes (line 153) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::comparison::failure (line 100) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::comparison::failure (line 15) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::attributes (line 28) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::the_macro (line 114) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::comparison::failure (line 25) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::the_macro (line 138) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::the_macro (line 46) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::the_macro (line 66) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::the_macro (line 75) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::the_macro (line 93) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::upgrading (line 107) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::upgrading (line 15) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::upgrading (line 23) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::upgrading (line 65) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::upgrading (line 79) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::upgrading (line 92) ... ignored
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::comparison::failure (line 166) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::comparison::failure (line 59) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::generics (line 8) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::generics (line 66) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::generics (line 38) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::opaque (line 15) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - guide::the_macro (line 13) ... ok
[INFO] [stdout] test <::doc_comment::doc_comment macros> - readme_tests (line 13) ... ok
[INFO] [stdout] test src/lib.rs - ErrorCompat (line 434) ... ok
[INFO] [stdout] test src/lib.rs -  (line 21) ... ok
[INFO] [stdout] test src/lib.rs - OptionExt::context (line 317) ... ok
[INFO] [stdout] test src/lib.rs - OptionExt::with_context (line 351) ... ok
[INFO] [stdout] test src/lib.rs - ResultExt::with_context (line 222) ... ok
[INFO] [stdout] test src/lib.rs - ensure (line 153) ... ok
[INFO] [stdout] test src/lib.rs - ResultExt::context (line 183) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 25 passed; 0 failed; 12 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0d666c30f96b6eec1f6dae6793037f2718263b36ab5ca1e3426658ac2ac472d0"`
[INFO] running `"docker" "rm" "-f" "0d666c30f96b6eec1f6dae6793037f2718263b36ab5ca1e3426658ac2ac472d0"`
[INFO] [stdout] 0d666c30f96b6eec1f6dae6793037f2718263b36ab5ca1e3426658ac2ac472d0