[INFO] crate idcontain 0.7.5 is already in cache
[INFO] extracting crate idcontain 0.7.5 into work/ex/beta-1.38-1/sources/1.37.0/reg/idcontain/0.7.5
[INFO] extracting crate idcontain 0.7.5 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/idcontain/0.7.5
[INFO] validating manifest of idcontain-0.7.5 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 idcontain-0.7.5 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 idcontain-0.7.5
[INFO] finished frobbing idcontain-0.7.5
[INFO] frobbed toml for idcontain-0.7.5 written to work/ex/beta-1.38-1/sources/1.37.0/reg/idcontain/0.7.5/Cargo.toml
[INFO] started frobbing idcontain-0.7.5
[INFO] finished frobbing idcontain-0.7.5
[INFO] frobbed toml for idcontain-0.7.5 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/idcontain/0.7.5/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 idcontain-0.7.5 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/idcontain/0.7.5:/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] 6d95287850dea47621b46122df04da2a356e75224fd0ed4fc7e23eaefb70b429
[INFO] running `"docker" "start" "-a" "6d95287850dea47621b46122df04da2a356e75224fd0ed4fc7e23eaefb70b429"`
[INFO] [stderr]    Compiling idcontain v0.7.5 (/opt/crater/workdir)
[INFO] [stderr] warning[E0505]: cannot move out of `_` because it is borrowed
[INFO] [stderr]    --> src/slab.rs:457:13
[INFO] [stderr]     |
[INFO] [stderr] 451 |     fn get_mut_or_tagged_slot(&mut self, id: Id<T>) -> Result<&mut T, Option<&mut TaggedSlot<T>>> {
[INFO] [stderr]     |                               - let's call the lifetime of this reference `'1`
[INFO] [stderr] ...
[INFO] [stderr] 454 |                      slot: Slot::Occupied { ref mut value },
[INFO] [stderr]     |                                             ------------- borrow of value occurs here
[INFO] [stderr] 455 |                      tag,
[INFO] [stderr] 456 |                  }) if tag == id.tag => Ok(value),
[INFO] [stderr]     |                                         --------- returning this value requires that borrow lasts for `'1`
[INFO] [stderr] 457 |             tagged_slot => Err(tagged_slot),
[INFO] [stderr]     |             ^^^^^^^^^^^ move out of value occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `"docker" "inspect" "6d95287850dea47621b46122df04da2a356e75224fd0ed4fc7e23eaefb70b429"`
[INFO] running `"docker" "rm" "-f" "6d95287850dea47621b46122df04da2a356e75224fd0ed4fc7e23eaefb70b429"`
[INFO] [stdout] 6d95287850dea47621b46122df04da2a356e75224fd0ed4fc7e23eaefb70b429
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/idcontain/0.7.5:/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] 6df80c4ed547fd5b48fceba9b65aa88a9265ce6d97dc32cea45e9daaab7b4c8a
[INFO] running `"docker" "start" "-a" "6df80c4ed547fd5b48fceba9b65aa88a9265ce6d97dc32cea45e9daaab7b4c8a"`
[INFO] [stderr]    Compiling idcontain v0.7.5 (/opt/crater/workdir)
[INFO] [stderr] warning[E0505]: cannot move out of `_` because it is borrowed
[INFO] [stderr]    --> src/slab.rs:457:13
[INFO] [stderr]     |
[INFO] [stderr] 451 |     fn get_mut_or_tagged_slot(&mut self, id: Id<T>) -> Result<&mut T, Option<&mut TaggedSlot<T>>> {
[INFO] [stderr]     |                               - let's call the lifetime of this reference `'1`
[INFO] [stderr] ...
[INFO] [stderr] 454 |                      slot: Slot::Occupied { ref mut value },
[INFO] [stderr]     |                                             ------------- borrow of value occurs here
[INFO] [stderr] 455 |                      tag,
[INFO] [stderr] 456 |                  }) if tag == id.tag => Ok(value),
[INFO] [stderr]     |                                         --------- returning this value requires that borrow lasts for `'1`
[INFO] [stderr] 457 |             tagged_slot => Err(tagged_slot),
[INFO] [stderr]     |             ^^^^^^^^^^^ move out of value occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `"docker" "inspect" "6df80c4ed547fd5b48fceba9b65aa88a9265ce6d97dc32cea45e9daaab7b4c8a"`
[INFO] running `"docker" "rm" "-f" "6df80c4ed547fd5b48fceba9b65aa88a9265ce6d97dc32cea45e9daaab7b4c8a"`
[INFO] [stdout] 6df80c4ed547fd5b48fceba9b65aa88a9265ce6d97dc32cea45e9daaab7b4c8a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/idcontain/0.7.5:/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] acf23b598de38bebe681411520436e5f0524ea93db501b947619c1ea8549213a
[INFO] running `"docker" "start" "-a" "acf23b598de38bebe681411520436e5f0524ea93db501b947619c1ea8549213a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/idcontain-b4ee69df40f0196e
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test map::tests::insert_remove_get ... ok
[INFO] [stdout] test map::tests::modify_through_get_mut ... ok
[INFO] [stdout] test map::tests::insert_twice_returns_first_and_respects_tag ... ok
[INFO] [stdout] test map::tests::insert_get_returns_correct ... ok
[INFO] [stdout] test map::tests::swap ... ok
[INFO] [stdout] test slab::tests::id_slab_insert_then_get_and_index ... ok
[INFO] [stdout] test slab::tests::id_slab_ids_from_different_id_slabs ... ok
[INFO] [stdout] test slab::tests::len_iter_contains_on_empty ... ok
[INFO] [stdout] test slab::tests::id_slab_insert_then_remove_iter ... ok
[INFO] [stdout] test slab::tests::id_slab_insert_then_remove_get ... ok
[INFO] [stdout] test slab::tests::iter_mut_on_empty ... ok
[INFO] [stdout] test slab::tests::id_slab_insert_then_remove_index_panics ... ok
[INFO] [stdout] test slab::tests::id_slab_insert_then_remove_index_mut_panics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests idcontain
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test src/slab.rs - slab::IdSlab (line 60) ... ok
[INFO] [stdout] test src/id.rs - id::Id<T>::invalid (line 53) ... ok
[INFO] [stdout] test src/id.rs - id::Id<T>::cast (line 76) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::contains (line 189) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::by_index (line 472) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::get (line 220) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab (line 20) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::by_index_mut (line 497) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::index_to_id (line 525) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::is_empty (line 162) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::get_mut (line 244) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::insert (line 271) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::iter (line 386) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::iter_mut (line 419) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::len (line 139) ... ok
[INFO] [stdout] test src/slab.rs - slab::IdSlab<T>::remove (line 331) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "acf23b598de38bebe681411520436e5f0524ea93db501b947619c1ea8549213a"`
[INFO] running `"docker" "rm" "-f" "acf23b598de38bebe681411520436e5f0524ea93db501b947619c1ea8549213a"`
[INFO] [stdout] acf23b598de38bebe681411520436e5f0524ea93db501b947619c1ea8549213a