[INFO] crate expectation 0.1.1 is already in cache
[INFO] extracting crate expectation 0.1.1 into work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/expectation/0.1.1
[INFO] extracting crate expectation 0.1.1 into work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/expectation/0.1.1
[INFO] validating manifest of expectation-0.1.1 on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of expectation-0.1.1 on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing expectation-0.1.1
[INFO] finished frobbing expectation-0.1.1
[INFO] frobbed toml for expectation-0.1.1 written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/reg/expectation/0.1.1/Cargo.toml
[INFO] started frobbing expectation-0.1.1
[INFO] finished frobbing expectation-0.1.1
[INFO] frobbed toml for expectation-0.1.1 written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/expectation/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking expectation-0.1.1 against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-5/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/reg/expectation/0.1.1:/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=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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6e983218a961ef91437c9ae87a463a5bf4bcd3dc4b16e4397870984aff3400ba
[INFO] running `"docker" "start" "-a" "6e983218a961ef91437c9ae87a463a5bf4bcd3dc4b16e4397870984aff3400ba"`
[INFO] [stderr]     Checking diff v0.1.11
[INFO] [stderr]     Checking expectation-shared v0.1.0
[INFO] [stderr]     Checking image v0.19.0
[INFO] [stderr]     Checking expectation v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/provider.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub(crate) fs: Box<FileSystem>,
[INFO] [stderr]   |                        ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[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]   --> src/provider.rs:16:35
[INFO] [stderr]    |
[INFO] [stderr] 16 |         Fn: for<'a> FnMut(&'a mut Write) -> IoResult<()>,
[INFO] [stderr]    |                                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Box<for<'a> Fn(&'a mut ReadSeek, &'a mut ReadSeek) -> IoResult<bool>>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn for<'a> Fn(&'a mut ReadSeek, &'a mut ReadSeek) -> IoResult<bool>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:27:32
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Box<for<'a> Fn(&'a mut ReadSeek, &'a mut ReadSeek) -> IoResult<bool>>,
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:27:50
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Box<for<'a> Fn(&'a mut ReadSeek, &'a mut ReadSeek) -> IoResult<bool>>,
[INFO] [stderr]    |                                                  ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 | /             for<'b> Fn(&'b mut ReadSeek, &'b mut ReadSeek, &'b Path, &'b mut WriteRequester)
[INFO] [stderr] 30 | |                 -> IoResult<()>,
[INFO] [stderr]    | |_______________________________^
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 29 |             dyn for<'b> Fn(&'b mut ReadSeek, &'b mut ReadSeek, &'b Path, &'b mut WriteRequester)
[INFO] [stderr] 30 |                 -> IoResult<()>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:29:32
[INFO] [stderr]    |
[INFO] [stderr] 29 |             for<'b> Fn(&'b mut ReadSeek, &'b mut ReadSeek, &'b Path, &'b mut WriteRequester)
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:29:50
[INFO] [stderr]    |
[INFO] [stderr] 29 |             for<'b> Fn(&'b mut ReadSeek, &'b mut ReadSeek, &'b Path, &'b mut WriteRequester)
[INFO] [stderr]    |                                                  ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:36:29
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub(crate) root_fs: Box<FileSystem>,
[INFO] [stderr]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:37:24
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub(crate) fs: Box<FileSystem>,
[INFO] [stderr]    |                        ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:44:21
[INFO] [stderr]    |
[INFO] [stderr] 44 |     filesystem: Box<FileSystem>,
[INFO] [stderr]    |                     ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:60:28
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn new(filesystem: Box<FileSystem>, path: PathBuf) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:80:36
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub(crate) fn new(root_fs: Box<FileSystem>, fs: Box<FileSystem>) -> Provider {
[INFO] [stderr]    |                                    ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:80:57
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub(crate) fn new(root_fs: Box<FileSystem>, fs: Box<FileSystem>) -> Provider {
[INFO] [stderr]    |                                                         ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:122:32
[INFO] [stderr]     |
[INFO] [stderr] 122 |         C: for<'a> Fn(&'a mut (ReadSeek), &'a mut (ReadSeek)) -> IoResult<bool> + 'static,
[INFO] [stderr]     |                                ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:122:52
[INFO] [stderr]     |
[INFO] [stderr] 122 |         C: for<'a> Fn(&'a mut (ReadSeek), &'a mut (ReadSeek)) -> IoResult<bool> + 'static,
[INFO] [stderr]     |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:123:32
[INFO] [stderr]     |
[INFO] [stderr] 123 |         D: for<'b> Fn(&'b mut (ReadSeek), &'b mut (ReadSeek), &'b Path, &'b mut WriteRequester) -> IoResult<()>
[INFO] [stderr]     |                                ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:123:52
[INFO] [stderr]     |
[INFO] [stderr] 123 |         D: for<'b> Fn(&'b mut (ReadSeek), &'b mut (ReadSeek), &'b Path, &'b mut WriteRequester) -> IoResult<()>
[INFO] [stderr]     |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fs: Box<FileSystem>,
[INFO] [stderr]     |             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]   --> src/lib.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let name = name.trim_left_matches("expectation_test_");
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/provider.rs:8:24
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub(crate) fs: Box<FileSystem>,
[INFO] [stderr]   |                        ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[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]   --> src/provider.rs:16:35
[INFO] [stderr]    |
[INFO] [stderr] 16 |         Fn: for<'a> FnMut(&'a mut Write) -> IoResult<()>,
[INFO] [stderr]    |                                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Box<for<'a> Fn(&'a mut ReadSeek, &'a mut ReadSeek) -> IoResult<bool>>,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn for<'a> Fn(&'a mut ReadSeek, &'a mut ReadSeek) -> IoResult<bool>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:27:32
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Box<for<'a> Fn(&'a mut ReadSeek, &'a mut ReadSeek) -> IoResult<bool>>,
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:27:50
[INFO] [stderr]    |
[INFO] [stderr] 27 |         Box<for<'a> Fn(&'a mut ReadSeek, &'a mut ReadSeek) -> IoResult<bool>>,
[INFO] [stderr]    |                                                  ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 | /             for<'b> Fn(&'b mut ReadSeek, &'b mut ReadSeek, &'b Path, &'b mut WriteRequester)
[INFO] [stderr] 30 | |                 -> IoResult<()>,
[INFO] [stderr]    | |_______________________________^
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 29 |             dyn for<'b> Fn(&'b mut ReadSeek, &'b mut ReadSeek, &'b Path, &'b mut WriteRequester)
[INFO] [stderr] 30 |                 -> IoResult<()>,
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:29:32
[INFO] [stderr]    |
[INFO] [stderr] 29 |             for<'b> Fn(&'b mut ReadSeek, &'b mut ReadSeek, &'b Path, &'b mut WriteRequester)
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:29:50
[INFO] [stderr]    |
[INFO] [stderr] 29 |             for<'b> Fn(&'b mut ReadSeek, &'b mut ReadSeek, &'b Path, &'b mut WriteRequester)
[INFO] [stderr]    |                                                  ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:36:29
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub(crate) root_fs: Box<FileSystem>,
[INFO] [stderr]    |                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:37:24
[INFO] [stderr]    |
[INFO] [stderr] 37 |     pub(crate) fs: Box<FileSystem>,
[INFO] [stderr]    |                        ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:44:21
[INFO] [stderr]    |
[INFO] [stderr] 44 |     filesystem: Box<FileSystem>,
[INFO] [stderr]    |                     ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:60:28
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn new(filesystem: Box<FileSystem>, path: PathBuf) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:80:36
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub(crate) fn new(root_fs: Box<FileSystem>, fs: Box<FileSystem>) -> Provider {
[INFO] [stderr]    |                                    ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/provider.rs:80:57
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub(crate) fn new(root_fs: Box<FileSystem>, fs: Box<FileSystem>) -> Provider {
[INFO] [stderr]    |                                                         ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:122:32
[INFO] [stderr]     |
[INFO] [stderr] 122 |         C: for<'a> Fn(&'a mut (ReadSeek), &'a mut (ReadSeek)) -> IoResult<bool> + 'static,
[INFO] [stderr]     |                                ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:122:52
[INFO] [stderr]     |
[INFO] [stderr] 122 |         C: for<'a> Fn(&'a mut (ReadSeek), &'a mut (ReadSeek)) -> IoResult<bool> + 'static,
[INFO] [stderr]     |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:123:32
[INFO] [stderr]     |
[INFO] [stderr] 123 |         D: for<'b> Fn(&'b mut (ReadSeek), &'b mut (ReadSeek), &'b Path, &'b mut WriteRequester) -> IoResult<()>
[INFO] [stderr]     |                                ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:123:52
[INFO] [stderr]     |
[INFO] [stderr] 123 |         D: for<'b> Fn(&'b mut (ReadSeek), &'b mut (ReadSeek), &'b Path, &'b mut WriteRequester) -> IoResult<()>
[INFO] [stderr]     |                                                    ^^^^^^^^ help: use `dyn`: `dyn ReadSeek`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/provider.rs:141:61
[INFO] [stderr]     |
[INFO] [stderr] 141 |     let filesystem = Box::new(FakeFileSystem::new()) as Box<FileSystem>;
[INFO] [stderr]     |                                                             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |     fs: Box<FileSystem>,
[INFO] [stderr]     |             ^^^^^^^^^^ help: use `dyn`: `dyn FileSystem`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]   --> src/lib.rs:46:21
[INFO] [stderr]    |
[INFO] [stderr] 46 |     let name = name.trim_left_matches("expectation_test_");
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_start_matches`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 writeln!(w, "image formats are different");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 |                 writeln!(w, "actual:   RGB8");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:138:17
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 writeln!(w, "expected: RGBA8 (Alpha)");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:144:17
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 writeln!(w, "image formats are different");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:145:17
[INFO] [stderr]     |
[INFO] [stderr] 145 |                 writeln!(w, "actual:   RGBA8 (Alpha)");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 writeln!(w, "expected: RGB8");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:136:17
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 writeln!(w, "image formats are different");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 |                 writeln!(w, "actual:   RGB8");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:138:17
[INFO] [stderr]     |
[INFO] [stderr] 138 |                 writeln!(w, "expected: RGBA8 (Alpha)");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:144:17
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 writeln!(w, "image formats are different");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:145:17
[INFO] [stderr]     |
[INFO] [stderr] 145 |                 writeln!(w, "actual:   RGBA8 (Alpha)");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/extensions/image.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 writeln!(w, "expected: RGB8");
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.41s
[INFO] running `"docker" "inspect" "6e983218a961ef91437c9ae87a463a5bf4bcd3dc4b16e4397870984aff3400ba"`
[INFO] running `"docker" "rm" "-f" "6e983218a961ef91437c9ae87a463a5bf4bcd3dc4b16e4397870984aff3400ba"`
[INFO] [stdout] 6e983218a961ef91437c9ae87a463a5bf4bcd3dc4b16e4397870984aff3400ba