[INFO] crate mail-core 0.6.2 is already in cache
[INFO] extracting crate mail-core 0.6.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/mail-core/0.6.2
[INFO] extracting crate mail-core 0.6.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mail-core/0.6.2
[INFO] validating manifest of mail-core-0.6.2 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 mail-core-0.6.2 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 mail-core-0.6.2
[INFO] finished frobbing mail-core-0.6.2
[INFO] frobbed toml for mail-core-0.6.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/mail-core/0.6.2/Cargo.toml
[INFO] started frobbing mail-core-0.6.2
[INFO] finished frobbing mail-core-0.6.2
[INFO] frobbed toml for mail-core-0.6.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/mail-core/0.6.2/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 mail-core-0.6.2 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-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/mail-core/0.6.2:/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] 5f25e321e94d7c6ff8d81f0c964d19a66eb8d5a6add20f3f96d9c9b30ce1a82a
[INFO] running `"docker" "start" "-a" "5f25e321e94d7c6ff8d81f0c964d19a66eb8d5a6add20f3f96d9c9b30ce1a82a"`
[INFO] [stderr]    Compiling checked_command v0.2.2
[INFO] [stderr]    Compiling vec-drain-where v1.0.0
[INFO] [stderr]    Compiling mail-internals v0.2.3
[INFO] [stderr]    Compiling total-order-multi-map v0.4.5
[INFO] [stderr]    Compiling mail-headers v0.6.6
[INFO] [stderr]    Compiling mail-core v0.6.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/mail.rs:600:17
[INFO] [stderr]     |
[INFO] [stderr] 600 |             let mut headers: &mut HeaderMap = headers;
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.73s
[INFO] running `"docker" "inspect" "5f25e321e94d7c6ff8d81f0c964d19a66eb8d5a6add20f3f96d9c9b30ce1a82a"`
[INFO] running `"docker" "rm" "-f" "5f25e321e94d7c6ff8d81f0c964d19a66eb8d5a6add20f3f96d9c9b30ce1a82a"`
[INFO] [stdout] 5f25e321e94d7c6ff8d81f0c964d19a66eb8d5a6add20f3f96d9c9b30ce1a82a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/mail-core/0.6.2:/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] 69e3a5a79f650cac64b74af22dade0279582b678b76f45965abce496392ee3a6
[INFO] running `"docker" "start" "-a" "69e3a5a79f650cac64b74af22dade0279582b678b76f45965abce496392ee3a6"`
[INFO] [stderr]    Compiling mail-core v0.6.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/mail.rs:600:17
[INFO] [stderr]     |
[INFO] [stderr] 600 |             let mut headers: &mut HeaderMap = headers;
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.65s
[INFO] running `"docker" "inspect" "69e3a5a79f650cac64b74af22dade0279582b678b76f45965abce496392ee3a6"`
[INFO] running `"docker" "rm" "-f" "69e3a5a79f650cac64b74af22dade0279582b678b76f45965abce496392ee3a6"`
[INFO] [stdout] 69e3a5a79f650cac64b74af22dade0279582b678b76f45965abce496392ee3a6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/mail-core/0.6.2:/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] ab6ca2d6333bb56e87fb16f3cfd454c22296704460b28d08001c6faf30a851fd
[INFO] running `"docker" "start" "-a" "ab6ca2d6333bb56e87fb16f3cfd454c22296704460b28d08001c6faf30a851fd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mail_core-d261735eb4147e86
[INFO] [stdout] 
[INFO] [stdout] running 21 tests
[INFO] [stdout] test iri::test::replacing_tail_does_that ... ok
[INFO] [stdout] test iri::test::scheme_is_always_lower_case ... ok
[INFO] [stdout] test iri::test::scheme_is_lowercase ... ok
[INFO] [stdout] test iri::test::scheme_name_has_to_be_valid ... ok
[INFO] [stdout] test iri::test::split_correctly_excluding_colon ... ok
[INFO] [stdout] test default_impl::message_id_gen::test::HashedIdGen::generate_content_id::should_always_return_a_new_id ... ok
[INFO] [stdout] test default_impl::message_id_gen::test::HashedIdGen::get_message_id::should_always_return_a_new_id ... ok
[INFO] [stdout] test default_impl::cpupool::test::check_if_it_works ... ok
[INFO] [stdout] test mail::test::EncodableMail::does_not_override_date_if_set ... ok
[INFO] [stdout] test mail::test::EncodableMail::checks_there_is_from ... ok
[INFO] [stdout] test mail::test::Mail::insert_header_set_a_header ... ok
[INFO] [stdout] test mail::test::EncodableMail::runs_contextual_validators ... ok
[INFO] [stdout] test mail::test::EncodableMail::sets_generated_headers_for_sub_mails ... ok
[INFO] [stdout] test mail::test::Mail::visit_mail_bodies_does_not_skip ... ok
[INFO] [stdout] test mail::test::Mail::insert_headers_sets_all_headers ... ok
[INFO] [stdout] test mail::test::EncodableMail::sets_generated_headers_for_outer_mail ... ok
[INFO] [stdout] test mime::test::write_random_boundary_to::boundary_start_special ... ok
[INFO] [stdout] test mime::test::write_random_boundary_to::boundary_does_not_contain_space_or_slach_or_quotes ... ok
[INFO] [stdout] test mime::test::write_random_boundary_to::boundary_has_a_resonable_length ... ok
[INFO] [stdout] test mime::test::write_random_boundary_to::boundary_is_not_quoted ... ok
[INFO] [stdout] test default_impl::fs::tests::sniff_media_type::works_reasonable_for_cargo_files ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mail-d031befa6be954fe
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test resource::load_file::use_name_is_used ... ok
[INFO] [stdout] test resource::load_file::get_name_from_path ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mail-core
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/iri.rs - iri::IRI (line 29) ... ok
[INFO] [stdout] test src/default_impl/simple_context.rs - default_impl::simple_context (line 10) ... ok
[INFO] [stdout] test src/iri.rs - iri::IRI::tail (line 130) ... ok
[INFO] [stdout] test src/iri.rs - iri::IRI::scheme (line 117) ... ok
[INFO] [stdout] test src/mail.rs - mail::Mail (line 117) ... ok
[INFO] [stdout] test src/mail.rs - mail::Mail (line 144) ... ok
[INFO] [stdout] test src/mail.rs - mail::Mail (line 70) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ab6ca2d6333bb56e87fb16f3cfd454c22296704460b28d08001c6faf30a851fd"`
[INFO] running `"docker" "rm" "-f" "ab6ca2d6333bb56e87fb16f3cfd454c22296704460b28d08001c6faf30a851fd"`
[INFO] [stdout] ab6ca2d6333bb56e87fb16f3cfd454c22296704460b28d08001c6faf30a851fd