[INFO] fetching crate snafu 0.2.0...
[INFO] extracting crate snafu 0.2.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/snafu/0.2.0
[INFO] extracting crate snafu 0.2.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/snafu/0.2.0
[INFO] validating manifest of snafu-0.2.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of snafu-0.2.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing snafu-0.2.0
[INFO] finished frobbing snafu-0.2.0
[INFO] frobbed toml for snafu-0.2.0 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/snafu/0.2.0/Cargo.toml
[INFO] started frobbing snafu-0.2.0
[INFO] finished frobbing snafu-0.2.0
[INFO] frobbed toml for snafu-0.2.0 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/snafu/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded snafu-derive v0.2.3
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing snafu-0.2.0 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/snafu/0.2.0:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] e10b19a40a3c8d7b912a6996298f3b9859d313c6264f6a005d962d1af82aba23
[INFO] running `"docker" "start" "-a" "e10b19a40a3c8d7b912a6996298f3b9859d313c6264f6a005d962d1af82aba23"`
[INFO] [stderr]    Compiling syn v0.15.35
[INFO] [stderr]    Compiling snafu-derive v0.2.3
[INFO] [stderr]    Compiling snafu v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.01s
[INFO] running `"docker" "inspect" "e10b19a40a3c8d7b912a6996298f3b9859d313c6264f6a005d962d1af82aba23"`
[INFO] running `"docker" "rm" "-f" "e10b19a40a3c8d7b912a6996298f3b9859d313c6264f6a005d962d1af82aba23"`
[INFO] [stdout] e10b19a40a3c8d7b912a6996298f3b9859d313c6264f6a005d962d1af82aba23
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/snafu/0.2.0:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2aff6486dd0a1eb9b22e29c9a5a4bde2efa77888b10fb4770069f2ebc4eb2bde
[INFO] running `"docker" "start" "-a" "2aff6486dd0a1eb9b22e29c9a5a4bde2efa77888b10fb4770069f2ebc4eb2bde"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling snafu v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/generics.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | type BoxError = Box<std::error::Error>;
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::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]  --> tests/backtrace.rs:5:25
[INFO] [stderr]   |
[INFO] [stderr] 5 | type AnotherError = Box<std::error::Error>;
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `"docker" "inspect" "2aff6486dd0a1eb9b22e29c9a5a4bde2efa77888b10fb4770069f2ebc4eb2bde"`
[INFO] running `"docker" "rm" "-f" "2aff6486dd0a1eb9b22e29c9a5a4bde2efa77888b10fb4770069f2ebc4eb2bde"`
[INFO] [stdout] 2aff6486dd0a1eb9b22e29c9a5a4bde2efa77888b10fb4770069f2ebc4eb2bde
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/snafu/0.2.0:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 9966c49085f9f6258b68c78c293b9312c052188b35a1d8ed449c18ca14806efb
[INFO] running `"docker" "start" "-a" "9966c49085f9f6258b68c78c293b9312c052188b35a1d8ed449c18ca14806efb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snafu-3e70580c91147ccc
[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/backtrace-b026c0e58699a933
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test has_a_backtrace ... ok
[INFO] [stdout] test errors_with_sources_and_other_info_can_have_backtraces ... ok
[INFO] [stdout] test display_can_access_backtrace ... ok
[INFO] [stdout] test errors_with_sources_can_have_backtraces ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backtrace_delegation-873ab48ecd8bc9da
[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-697404857446bb39
[INFO] [stderr]      Running /opt/crater/target/debug/deps/boxed_error-3174d3ff38aff0e1
[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] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/generics-b3c937b865b7a176
[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] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mapping_result_without_try_operator-9a97f42af4feb429
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running /opt/crater/target/debug/deps/options-fc9bc0c9c50cc1f6
[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] [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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test implements_error ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/visibility-4950699c5812a0d2
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test can_set_default_visibility ... ok
[INFO] [stdout] test outer::can_set_default_visibility ... ok
[INFO] [stdout] test outer::can_set_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 24 tests
[INFO] [stdout] test src/guide/the_macro.rs - guide::the_macro (line 111) ... ignored
[INFO] [stdout] test src/guide/the_macro.rs - guide::the_macro (line 134) ... ignored
[INFO] [stdout] test src/guide/the_macro.rs - guide::the_macro (line 42) ... ignored
[INFO] [stdout] test src/guide/the_macro.rs - guide::the_macro (line 63) ... ignored
[INFO] [stdout] test src/guide/the_macro.rs - guide::the_macro (line 72) ... ignored
[INFO] [stdout] test src/guide/the_macro.rs - guide::the_macro (line 90) ... ignored
[INFO] [stdout] test src/guide/upgrading.rs - guide::upgrading (line 25) ... ignored
[INFO] [stdout] test src/guide/upgrading.rs - guide::upgrading (line 39) ... ignored
[INFO] [stdout] test src/guide/upgrading.rs - guide::upgrading (line 52) ... ignored
[INFO] [stdout] test src/guide/upgrading.rs - guide::upgrading (line 67) ... ignored
[INFO] [stdout] test src/lib.rs -  (line 18) ... ok
[INFO] [stdout] test src/lib.rs - OptionExt::with_context (line 306) ... ok
[INFO] [stdout] test src/lib.rs - ErrorCompat (line 438) ... ok
[INFO] [stdout] test src/lib.rs - OptionExt::eager_context (line 343) ... ok
[INFO] [stdout] test src/lib.rs - OptionExt::context (line 277) ... ok
[INFO] [stdout] test src/guide/attributes.rs - guide::attributes (line 65) ... ok
[INFO] [stdout] test src/guide/attributes.rs - guide::attributes (line 48) ... ok
[INFO] [stdout] test src/guide/the_macro.rs - guide::the_macro (line 12) ... ok
[INFO] [stdout] test src/lib.rs - OptionExt::with_eager_context (line 378) ... ok
[INFO] [stdout] test src/lib.rs - ResultExt::context (line 117) ... ok
[INFO] [stdout] test src/lib.rs - ResultExt::with_context (line 145) ... ok
[INFO] [stdout] test src/lib.rs - ResultExt::with_eager_context (line 215) ... ok
[INFO] [stdout] test src/lib.rs - ResultExt::eager_context (line 182) ... ok
[INFO] [stdout] test src/lib.rs - ensure (line 79) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 10 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9966c49085f9f6258b68c78c293b9312c052188b35a1d8ed449c18ca14806efb"`
[INFO] running `"docker" "rm" "-f" "9966c49085f9f6258b68c78c293b9312c052188b35a1d8ed449c18ca14806efb"`
[INFO] [stdout] 9966c49085f9f6258b68c78c293b9312c052188b35a1d8ed449c18ca14806efb