[INFO] crate picto 0.4.3 is already in cache
[INFO] checking picto-0.4.3 against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] extracting crate picto 0.4.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate picto 0.4.3 on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate picto 0.4.3
[INFO] finished tweaking crates.io crate picto 0.4.3
[INFO] tweaked toml for crates.io crate picto 0.4.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e959cb2e4f70400e41ef528cba0135f5b7e91409b77e9c7f68750297394aa328
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e959cb2e4f70400e41ef528cba0135f5b7e91409b77e9c7f68750297394aa328"`
[INFO] [stderr]     Checking exoquant v0.2.0
[INFO] [stderr]     Checking png v0.6.2
[INFO] [stderr]     Checking flate2 v0.2.20
[INFO] [stderr]    Compiling palette v0.2.1
[INFO] [stderr]     Checking imagefmt v4.0.0
[INFO] [stderr]     Checking xyz v0.2.1
[INFO] [stderr]     Checking image v0.12.4
[INFO] [stderr]     Checking picto v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 let (_, reader) = try!(decoder.read_info());
[INFO] [stderr]    |                                   ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:74:28
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let mut buffer = vec![0; try!(self.reader()).output_buffer_size()];
[INFO] [stderr]    |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |         try!(try!(self.reader()).next_frame(&mut buffer));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 |         try!(try!(self.reader()).next_frame(&mut buffer));
[INFO] [stderr]    |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:86:9
[INFO] [stderr]    |
[INFO] [stderr] 86 |         match try!(self.reader()).output_color_type() {
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 88 |                 buffer!(u8, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     try!(self.reader()).info().size().0,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 88 |                 buffer!(u8, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:81:6
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     try!(self.reader()).info().size().1,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 88 |                 buffer!(u8, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |                 buffer!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     try!(self.reader()).info().size().0,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |                 buffer!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:81:6
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     try!(self.reader()).info().size().1,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |                 buffer!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     try!(self.reader()).info().size().0,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:81:6
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     try!(self.reader()).info().size().1,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 97 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     try!(self.reader()).info().size().0,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 97 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:81:6
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     try!(self.reader()).info().size().1,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 97 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:79:33
[INFO] [stderr]     |
[INFO] [stderr] 79  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |                 buffer!(u16, color::Luma),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:80:6
[INFO] [stderr]     |
[INFO] [stderr] 80  |                     try!(self.reader()).info().size().0,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |                 buffer!(u16, color::Luma),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:81:6
[INFO] [stderr]     |
[INFO] [stderr] 81  |                     try!(self.reader()).info().size().1,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |                 buffer!(u16, color::Luma),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:79:33
[INFO] [stderr]     |
[INFO] [stderr] 79  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 103 |                 buffer!(u16, color::Lumaa),
[INFO] [stderr]     |                 -------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:80:6
[INFO] [stderr]     |
[INFO] [stderr] 80  |                     try!(self.reader()).info().size().0,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 103 |                 buffer!(u16, color::Lumaa),
[INFO] [stderr]     |                 -------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:81:6
[INFO] [stderr]     |
[INFO] [stderr] 81  |                     try!(self.reader()).info().size().1,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 103 |                 buffer!(u16, color::Lumaa),
[INFO] [stderr]     |                 -------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:79:33
[INFO] [stderr]     |
[INFO] [stderr] 79  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |                 buffer!(u16, color::Rgb),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:80:6
[INFO] [stderr]     |
[INFO] [stderr] 80  |                     try!(self.reader()).info().size().0,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |                 buffer!(u16, color::Rgb),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:81:6
[INFO] [stderr]     |
[INFO] [stderr] 81  |                     try!(self.reader()).info().size().1,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |                 buffer!(u16, color::Rgb),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:79:33
[INFO] [stderr]     |
[INFO] [stderr] 79  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u16, color::Rgba),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:80:6
[INFO] [stderr]     |
[INFO] [stderr] 80  |                     try!(self.reader()).info().size().0,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u16, color::Rgba),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:81:6
[INFO] [stderr]     |
[INFO] [stderr] 81  |                     try!(self.reader()).info().size().1,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u16, color::Rgba),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/jpeg.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 |             try!(self.inner.read_info());
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/jpeg.rs:89:20
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let mut buffer = try!(self.inner.decode());
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         match try!(self.metadata()).pixel_format {
[INFO] [stderr]     |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:93:33
[INFO] [stderr]     |
[INFO] [stderr] 93  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |                 buffer!(u8, color::Luma),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:94:6
[INFO] [stderr]     |
[INFO] [stderr] 94  |                     try!(self.metadata()).width as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |                 buffer!(u8, color::Luma),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:95:6
[INFO] [stderr]     |
[INFO] [stderr] 95  |                     try!(self.metadata()).height as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |                 buffer!(u8, color::Luma),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:93:33
[INFO] [stderr]     |
[INFO] [stderr] 93  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:94:6
[INFO] [stderr]     |
[INFO] [stderr] 94  |                     try!(self.metadata()).width as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:95:6
[INFO] [stderr]     |
[INFO] [stderr] 95  |                     try!(self.metadata()).height as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:93:33
[INFO] [stderr]     |
[INFO] [stderr] 93  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u8, color::Rgb)
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:94:6
[INFO] [stderr]     |
[INFO] [stderr] 94  |                     try!(self.metadata()).width as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u8, color::Rgb)
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:95:6
[INFO] [stderr]     |
[INFO] [stderr] 95  |                     try!(self.metadata()).height as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u8, color::Rgb)
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/bmp.rs:43:15
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let image = try!(bmp::read(self.inner.by_ref(), ColFmt::Auto));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/bmp.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/bmp.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:43:15
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let image = try!(tga::read(self.inner.by_ref(), ColFmt::Auto));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |                 buffer!(u8, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |                 buffer!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 65 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:48:37
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 self.state = Some(State::Reader(try!(decoder.read_info())));
[INFO] [stderr]    |                                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:77:15
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let frame = try!(try!(try!(self.reader()).read_next_frame()).ok_or(Error::Format("no frames".into())));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:77:20
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let frame = try!(try!(try!(self.reader()).read_next_frame()).ok_or(Error::Format("no frames".into())));
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:77:25
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let frame = try!(try!(try!(self.reader()).read_next_frame()).ok_or(Error::Format("no frames".into())));
[INFO] [stderr]    |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:79:31
[INFO] [stderr]    |
[INFO] [stderr] 79 |         Ok(cast::Into::<P, C>::into(try!(Buffer::<color::Rgba, u8, _>::from_raw(
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/xyz.rs:44:15
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let image = try!(xyz::read(self.inner.by_ref()));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/xyz.rs:46:31
[INFO] [stderr]    |
[INFO] [stderr] 46 |         Ok(cast::Into::<P, C>::into(try!(Buffer::<color::Rgb, u8, _>::from_raw(
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:50:20
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let mut writer = try!(encoder.write_header());
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 60 |                 write!(u8, color::Luma),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 63 |                 write!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 66 |                 write!(u8, color::Rgb),
[INFO] [stderr]    |                 ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |                 write!(u8, color::Rgba),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 |                 write!(u16, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 |                 write!(u16, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 78 |                 write!(u16, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 81 |                 write!(u16, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/bmp.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(bmp::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |                 write!(u8, color::Rgb),
[INFO] [stderr]    |                 ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/bmp.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(bmp::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |                 write!(u8, color::Rgba),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/tga.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(tga::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |                 write!(u8, color::Luma),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/tga.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(tga::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |                 write!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/tga.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(tga::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |                 write!(u8, color::Rgb),
[INFO] [stderr]    |                 ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/tga.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(tga::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 65 |                 write!(u8, color::Rgba),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/gif.rs:63:21
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut encoder = try!(gif::Encoder::new(self.inner.by_ref(),
[INFO] [stderr]    |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/gif.rs:66:3
[INFO] [stderr]    |
[INFO] [stderr] 66 |         try!(encoder.write_frame(&gif::Frame::from_rgba(
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/read.rs:44:15
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let format = try!(format::guess(input.by_ref()).ok_or(Error::Format("unsupported image format".into())));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/read.rs:90:22
[INFO] [stderr]    |
[INFO] [stderr] 90 |     from(BufReader::new(try!(File::open(path))))
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/write.rs:95:29
[INFO] [stderr]    |
[INFO] [stderr] 95 |     with_format(BufWriter::new(try!(File::create(path))), format, buffer)
[INFO] [stderr]    |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:43:15
[INFO] [stderr]    |
[INFO] [stderr] 43 |         f.write_str(error::Error::description(self))
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 err.description(),
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/error.rs:119:24
[INFO] [stderr]     |
[INFO] [stderr] 119 |                     Error::Format(err.description().to_owned()),
[INFO] [stderr]     |                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:45:23
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 let (_, reader) = try!(decoder.read_info());
[INFO] [stderr]    |                                   ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:74:28
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let mut buffer = vec![0; try!(self.reader()).output_buffer_size()];
[INFO] [stderr]    |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:75:3
[INFO] [stderr]    |
[INFO] [stderr] 75 |         try!(try!(self.reader()).next_frame(&mut buffer));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 |         try!(try!(self.reader()).next_frame(&mut buffer));
[INFO] [stderr]    |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:86:9
[INFO] [stderr]    |
[INFO] [stderr] 86 |         match try!(self.reader()).output_color_type() {
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 88 |                 buffer!(u8, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     try!(self.reader()).info().size().0,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 88 |                 buffer!(u8, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:81:6
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     try!(self.reader()).info().size().1,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 88 |                 buffer!(u8, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |                 buffer!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     try!(self.reader()).info().size().0,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |                 buffer!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:81:6
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     try!(self.reader()).info().size().1,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |                 buffer!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     try!(self.reader()).info().size().0,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:81:6
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     try!(self.reader()).info().size().1,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 94 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:79:33
[INFO] [stderr]    |
[INFO] [stderr] 79 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 97 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:80:6
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     try!(self.reader()).info().size().0,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 97 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/png.rs:81:6
[INFO] [stderr]    |
[INFO] [stderr] 81 |                     try!(self.reader()).info().size().1,
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 97 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:79:33
[INFO] [stderr]     |
[INFO] [stderr] 79  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |                 buffer!(u16, color::Luma),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:80:6
[INFO] [stderr]     |
[INFO] [stderr] 80  |                     try!(self.reader()).info().size().0,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |                 buffer!(u16, color::Luma),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:81:6
[INFO] [stderr]     |
[INFO] [stderr] 81  |                     try!(self.reader()).info().size().1,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 100 |                 buffer!(u16, color::Luma),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:79:33
[INFO] [stderr]     |
[INFO] [stderr] 79  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 103 |                 buffer!(u16, color::Lumaa),
[INFO] [stderr]     |                 -------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:80:6
[INFO] [stderr]     |
[INFO] [stderr] 80  |                     try!(self.reader()).info().size().0,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 103 |                 buffer!(u16, color::Lumaa),
[INFO] [stderr]     |                 -------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:81:6
[INFO] [stderr]     |
[INFO] [stderr] 81  |                     try!(self.reader()).info().size().1,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 103 |                 buffer!(u16, color::Lumaa),
[INFO] [stderr]     |                 -------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:79:33
[INFO] [stderr]     |
[INFO] [stderr] 79  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |                 buffer!(u16, color::Rgb),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:80:6
[INFO] [stderr]     |
[INFO] [stderr] 80  |                     try!(self.reader()).info().size().0,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |                 buffer!(u16, color::Rgb),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:81:6
[INFO] [stderr]     |
[INFO] [stderr] 81  |                     try!(self.reader()).info().size().1,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 106 |                 buffer!(u16, color::Rgb),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:79:33
[INFO] [stderr]     |
[INFO] [stderr] 79  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, _, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u16, color::Rgba),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:80:6
[INFO] [stderr]     |
[INFO] [stderr] 80  |                     try!(self.reader()).info().size().0,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u16, color::Rgba),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/png.rs:81:6
[INFO] [stderr]     |
[INFO] [stderr] 81  |                     try!(self.reader()).info().size().1,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u16, color::Rgba),
[INFO] [stderr]     |                 ------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/jpeg.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 |             try!(self.inner.read_info());
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/jpeg.rs:89:20
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let mut buffer = try!(self.inner.decode());
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |         match try!(self.metadata()).pixel_format {
[INFO] [stderr]     |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:93:33
[INFO] [stderr]     |
[INFO] [stderr] 93  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |                 buffer!(u8, color::Luma),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:94:6
[INFO] [stderr]     |
[INFO] [stderr] 94  |                     try!(self.metadata()).width as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |                 buffer!(u8, color::Luma),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:95:6
[INFO] [stderr]     |
[INFO] [stderr] 95  |                     try!(self.metadata()).height as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |                 buffer!(u8, color::Luma),
[INFO] [stderr]     |                 ------------------------ in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:93:33
[INFO] [stderr]     |
[INFO] [stderr] 93  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:94:6
[INFO] [stderr]     |
[INFO] [stderr] 94  |                     try!(self.metadata()).width as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:95:6
[INFO] [stderr]     |
[INFO] [stderr] 95  |                     try!(self.metadata()).height as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 105 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:93:33
[INFO] [stderr]     |
[INFO] [stderr] 93  |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u8, color::Rgb)
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:94:6
[INFO] [stderr]     |
[INFO] [stderr] 94  |                     try!(self.metadata()).width as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u8, color::Rgb)
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/decoder/jpeg.rs:95:6
[INFO] [stderr]     |
[INFO] [stderr] 95  |                     try!(self.metadata()).height as u32,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] ...
[INFO] [stderr] 109 |                 buffer!(u8, color::Rgb)
[INFO] [stderr]     |                 ----------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/bmp.rs:43:15
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let image = try!(bmp::read(self.inner.by_ref(), ColFmt::Auto));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/bmp.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/bmp.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:43:15
[INFO] [stderr]    |
[INFO] [stderr] 43 |         let image = try!(tga::read(self.inner.by_ref(), ColFmt::Auto));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |                 buffer!(u8, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |                 buffer!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |                 buffer!(u8, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/tga.rs:47:33
[INFO] [stderr]    |
[INFO] [stderr] 47 |                 Ok(cast::Into::<P, C>::into(try!(Buffer::<$ty, $ch, _>::from_raw(
[INFO] [stderr]    |                                             ^^^
[INFO] [stderr] ...
[INFO] [stderr] 65 |                 buffer!(u8, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:48:37
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 self.state = Some(State::Reader(try!(decoder.read_info())));
[INFO] [stderr]    |                                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:77:15
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let frame = try!(try!(try!(self.reader()).read_next_frame()).ok_or(Error::Format("no frames".into())));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:77:20
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let frame = try!(try!(try!(self.reader()).read_next_frame()).ok_or(Error::Format("no frames".into())));
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:77:25
[INFO] [stderr]    |
[INFO] [stderr] 77 |         let frame = try!(try!(try!(self.reader()).read_next_frame()).ok_or(Error::Format("no frames".into())));
[INFO] [stderr]    |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/gif.rs:79:31
[INFO] [stderr]    |
[INFO] [stderr] 79 |         Ok(cast::Into::<P, C>::into(try!(Buffer::<color::Rgba, u8, _>::from_raw(
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/xyz.rs:44:15
[INFO] [stderr]    |
[INFO] [stderr] 44 |         let image = try!(xyz::read(self.inner.by_ref()));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/decoder/xyz.rs:46:31
[INFO] [stderr]    |
[INFO] [stderr] 46 |         Ok(cast::Into::<P, C>::into(try!(Buffer::<color::Rgb, u8, _>::from_raw(
[INFO] [stderr]    |                                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:50:20
[INFO] [stderr]    |
[INFO] [stderr] 50 |         let mut writer = try!(encoder.write_header());
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 60 |                 write!(u8, color::Luma),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 63 |                 write!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 66 |                 write!(u8, color::Rgb),
[INFO] [stderr]    |                 ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |                 write!(u8, color::Rgba),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 72 |                 write!(u16, color::Luma),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 75 |                 write!(u16, color::Lumaa),
[INFO] [stderr]    |                 ------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 78 |                 write!(u16, color::Rgb),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/png.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |                 try!(writer.write_image_data(cast::Bytes::<$ty, $ch>::bytes(buffer).as_ref()))
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 81 |                 write!(u16, color::Rgba),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/bmp.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(bmp::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |                 write!(u8, color::Rgb),
[INFO] [stderr]    |                 ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/bmp.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(bmp::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |                 write!(u8, color::Rgba),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/tga.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(tga::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 56 |                 write!(u8, color::Luma),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/tga.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(tga::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |                 write!(u8, color::Lumaa),
[INFO] [stderr]    |                 ------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/tga.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(tga::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 62 |                 write!(u8, color::Rgb),
[INFO] [stderr]    |                 ---------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/tga.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 try!(tga::write(self.inner.by_ref(), buffer.width() as usize, buffer.height() as usize,
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] ...
[INFO] [stderr] 65 |                 write!(u8, color::Rgba),
[INFO] [stderr]    |                 ----------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/gif.rs:63:21
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut encoder = try!(gif::Encoder::new(self.inner.by_ref(),
[INFO] [stderr]    |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/encoder/gif.rs:66:3
[INFO] [stderr]    |
[INFO] [stderr] 66 |         try!(encoder.write_frame(&gif::Frame::from_rgba(
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/read.rs:44:15
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let format = try!(format::guess(input.by_ref()).ok_or(Error::Format("unsupported image format".into())));
[INFO] [stderr]    |                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/read.rs:90:22
[INFO] [stderr]    |
[INFO] [stderr] 90 |     from(BufReader::new(try!(File::open(path))))
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/write.rs:95:29
[INFO] [stderr]    |
[INFO] [stderr] 95 |     with_format(BufWriter::new(try!(File::create(path))), format, buffer)
[INFO] [stderr]    |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:43:15
[INFO] [stderr]    |
[INFO] [stderr] 43 |         f.write_str(error::Error::description(self))
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/buffer/buffer.rs:514:10
[INFO] [stderr]     |
[INFO] [stderr] 514 |     fn from(mut value: &'a mut Buffer<P, C, D>) -> view::Write<'a, P, C> {
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/buffer/buffer.rs:525:10
[INFO] [stderr]     |
[INFO] [stderr] 525 |     fn from(mut value: &'a mut Buffer<P, C, D>) -> View<'a, P, C> {
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/error.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |                 err.description(),
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/error.rs:119:24
[INFO] [stderr]     |
[INFO] [stderr] 119 |                     Error::Format(err.description().to_owned()),
[INFO] [stderr]     |                                       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `owner`
[INFO] [stderr]   --> src/iter/pixel/immutable.rs:27:2
[INFO] [stderr]    |
[INFO] [stderr] 27 |     owner: Region,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `owner`
[INFO] [stderr]   --> src/iter/pixel/mutable.rs:28:2
[INFO] [stderr]    |
[INFO] [stderr] 28 |     owner: Region,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> benches/iter.rs:46:15
[INFO] [stderr]    |
[INFO] [stderr] 46 |             for (x, y, mut px) in image.enumerate_pixels_mut() {
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/buffer/buffer.rs:514:10
[INFO] [stderr]     |
[INFO] [stderr] 514 |     fn from(mut value: &'a mut Buffer<P, C, D>) -> view::Write<'a, P, C> {
[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] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/buffer/buffer.rs:525:10
[INFO] [stderr]     |
[INFO] [stderr] 525 |     fn from(mut value: &'a mut Buffer<P, C, D>) -> View<'a, P, C> {
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `LOWER`
[INFO] [stderr]   --> examples/draw.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | const LOWER: char = '▄';
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `owner`
[INFO] [stderr]   --> src/iter/pixel/immutable.rs:27:2
[INFO] [stderr]    |
[INFO] [stderr] 27 |     owner: Region,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `owner`
[INFO] [stderr]   --> src/iter/pixel/mutable.rs:28:2
[INFO] [stderr]    |
[INFO] [stderr] 28 |     owner: Region,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.87s
[INFO] running `"docker" "inspect" "e959cb2e4f70400e41ef528cba0135f5b7e91409b77e9c7f68750297394aa328"`
[INFO] running `"docker" "rm" "-f" "e959cb2e4f70400e41ef528cba0135f5b7e91409b77e9c7f68750297394aa328"`
[INFO] [stdout] e959cb2e4f70400e41ef528cba0135f5b7e91409b77e9c7f68750297394aa328
