[INFO] fetching crate imagefile 0.1.0...
[INFO] checking imagefile-0.1.0 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate imagefile 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate imagefile 0.1.0 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imagefile 0.1.0
[INFO] finished tweaking crates.io crate imagefile 0.1.0
[INFO] tweaked toml for crates.io crate imagefile 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 42be5c972339cdee8c8dbf2a349d376b7faa127e890f9691580f4892350feab3
[INFO] running `Command { std: "docker" "start" "-a" "42be5c972339cdee8c8dbf2a349d376b7faa127e890f9691580f4892350feab3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "42be5c972339cdee8c8dbf2a349d376b7faa127e890f9691580f4892350feab3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42be5c972339cdee8c8dbf2a349d376b7faa127e890f9691580f4892350feab3", kill_on_drop: false }`
[INFO] [stdout] 42be5c972339cdee8c8dbf2a349d376b7faa127e890f9691580f4892350feab3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f62a278b07e1412ecddb3a176988f210dc7ebfef16eb5d5f181a17b115597f15
[INFO] running `Command { std: "docker" "start" "-a" "f62a278b07e1412ecddb3a176988f210dc7ebfef16eb5d5f181a17b115597f15", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking imagefile v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0532]: expected tuple struct or tuple variant, found unit variant `ImgfileError::NotEnoughData`
[INFO] [stdout]   --> src/lib.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |     NotEnoughData,
[INFO] [stdout]    |     ------------- `ImgfileError::NotEnoughData` defined here
[INFO] [stdout] ...
[INFO] [stdout] 59 |             ImgfileError::NotEnoughData(..) => &"Not enough data",
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use this syntax instead: `ImgfileError::NotEnoughData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Error` in crate `byteorder`
[INFO] [stdout]   --> src/lib.rs:79:22
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl From<byteorder::Error> for ImgfileError {
[INFO] [stdout]    |                      ^^^^^ not found in `byteorder`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 9  + use std::error::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use fmt::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use io::Error;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Error`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 79 - impl From<byteorder::Error> for ImgfileError {
[INFO] [stdout] 79 + impl From<Error> for ImgfileError {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Error` in crate `byteorder`
[INFO] [stdout]   --> src/lib.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn from(err: byteorder::Error) -> ImgfileError {
[INFO] [stdout]    |                             ^^^^^ not found in `byteorder`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 9  + use std::error::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use fmt::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use io::Error;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Error`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 80 -     fn from(err: byteorder::Error) -> ImgfileError {
[INFO] [stdout] 80 +     fn from(err: Error) -> ImgfileError {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Error` in `byteorder`
[INFO] [stdout]   --> src/lib.rs:82:24
[INFO] [stdout]    |
[INFO] [stdout] 82 |             byteorder::Error::UnexpectedEOF => ImgfileError::ImageEnd,
[INFO] [stdout]    |                        ^^^^^ could not find `Error` in `byteorder`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 9  + use std::error::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use fmt::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use io::Error;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Error`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 82 -             byteorder::Error::UnexpectedEOF => ImgfileError::ImageEnd,
[INFO] [stdout] 82 +             Error::UnexpectedEOF => ImgfileError::ImageEnd,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Error` in `byteorder`
[INFO] [stdout]   --> src/lib.rs:83:24
[INFO] [stdout]    |
[INFO] [stdout] 83 |             byteorder::Error::Io(err) => ImgfileError::IoError(err),
[INFO] [stdout]    |                        ^^^^^ could not find `Error` in `byteorder`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 9  + use std::error::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use fmt::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use io::Error;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Error`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 83 -             byteorder::Error::Io(err) => ImgfileError::IoError(err),
[INFO] [stdout] 83 +             Error::Io(err) => ImgfileError::IoError(err),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(r.seek(SeekFrom::Start(0)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         try!(r.read_exact(head));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         try!(self.r.seek(SeekFrom::Start(offset)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         try!(self.r.read_exact(&mut buf[..row_len]));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         try!(self.r.seek(SeekFrom::Start(HEADER_LEN)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         try!(self.r.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         try!(w.write_all("imagefile".as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         try!(w.write_u32::<BigEndian>(width));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         try!(w.write_u32::<BigEndian>(height));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(w.write_all(data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `read_exact` has been stable since 1.6.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(read_exact)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:65:33
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn cause (&self) -> Option<&Error> {
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn cause (&self) -> Option<&dyn Error> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0532]: expected tuple struct or tuple variant, found unit variant `ImgfileError::NotEnoughData`
[INFO] [stdout]   --> src/lib.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 23 |     NotEnoughData,
[INFO] [stdout]    |     ------------- `ImgfileError::NotEnoughData` defined here
[INFO] [stdout] ...
[INFO] [stdout] 59 |             ImgfileError::NotEnoughData(..) => &"Not enough data",
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use this syntax instead: `ImgfileError::NotEnoughData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Error` in crate `byteorder`
[INFO] [stdout]   --> src/lib.rs:79:22
[INFO] [stdout]    |
[INFO] [stdout] 79 | impl From<byteorder::Error> for ImgfileError {
[INFO] [stdout]    |                      ^^^^^ not found in `byteorder`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 9  + use std::error::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use fmt::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use io::Error;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Error`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 79 - impl From<byteorder::Error> for ImgfileError {
[INFO] [stdout] 79 + impl From<Error> for ImgfileError {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Error` in crate `byteorder`
[INFO] [stdout]   --> src/lib.rs:80:29
[INFO] [stdout]    |
[INFO] [stdout] 80 |     fn from(err: byteorder::Error) -> ImgfileError {
[INFO] [stdout]    |                             ^^^^^ not found in `byteorder`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 9  + use std::error::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use fmt::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use io::Error;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Error`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 80 -     fn from(err: byteorder::Error) -> ImgfileError {
[INFO] [stdout] 80 +     fn from(err: Error) -> ImgfileError {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Error` in `byteorder`
[INFO] [stdout]   --> src/lib.rs:82:24
[INFO] [stdout]    |
[INFO] [stdout] 82 |             byteorder::Error::UnexpectedEOF => ImgfileError::ImageEnd,
[INFO] [stdout]    |                        ^^^^^ could not find `Error` in `byteorder`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 9  + use std::error::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use fmt::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use io::Error;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Error`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 82 -             byteorder::Error::UnexpectedEOF => ImgfileError::ImageEnd,
[INFO] [stdout] 82 +             Error::UnexpectedEOF => ImgfileError::ImageEnd,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `Error` in `byteorder`
[INFO] [stdout]   --> src/lib.rs:83:24
[INFO] [stdout]    |
[INFO] [stdout] 83 |             byteorder::Error::Io(err) => ImgfileError::IoError(err),
[INFO] [stdout]    |                        ^^^^^ could not find `Error` in `byteorder`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 9  + use std::error::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use fmt::Error;
[INFO] [stdout]    |
[INFO] [stdout] 9  + use io::Error;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Error`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 83 -             byteorder::Error::Io(err) => ImgfileError::IoError(err),
[INFO] [stdout] 83 +             Error::Io(err) => ImgfileError::IoError(err),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(r.seek(SeekFrom::Start(0)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         try!(r.read_exact(head));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:51:9
[INFO] [stdout]    |
[INFO] [stdout] 51 |         try!(self.r.seek(SeekFrom::Start(offset)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |         try!(self.r.read_exact(&mut buf[..row_len]));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |         try!(self.r.seek(SeekFrom::Start(HEADER_LEN)));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/decoder.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         try!(self.r.read_exact(&mut buf));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |         try!(w.write_all("imagefile".as_bytes()));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         try!(w.write_u32::<BigEndian>(width));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |         try!(w.write_u32::<BigEndian>(height));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/encoder.rs:19:9
[INFO] [stdout]    |
[INFO] [stdout] 19 |         try!(w.write_all(data));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `read_exact` has been stable since 1.6.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(read_exact)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:65:33
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn cause (&self) -> Option<&Error> {
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn cause (&self) -> Option<&dyn Error> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433, E0532.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imagefile` (lib) due to 6 previous errors; 12 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no variant or associated item named `UnexpectedEOF` found for enum `ErrorKind` in the current scope
[INFO] [stdout]    --> src/decoder.rs:104:43
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 if e.kind() == ErrorKind::UnexpectedEOF {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^ variant or associated item not found in `ErrorKind`
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name (notice the capitalization difference)
[INFO] [stdout]     |
[INFO] [stdout] 104 |                 if e.kind() == ErrorKind::UnexpectedEof {
[INFO] [stdout]     |                                           ~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `UnexpectedEOF` found for enum `ErrorKind` in the current scope
[INFO] [stdout]    --> src/decoder.rs:122:43
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 if e.kind() == ErrorKind::UnexpectedEOF {
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^ variant or associated item not found in `ErrorKind`
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name (notice the capitalization difference)
[INFO] [stdout]     |
[INFO] [stdout] 122 |                 if e.kind() == ErrorKind::UnexpectedEof {
[INFO] [stdout]     |                                           ~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors; 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0433, E0532, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imagefile` (lib test) due to 8 previous errors; 12 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f62a278b07e1412ecddb3a176988f210dc7ebfef16eb5d5f181a17b115597f15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f62a278b07e1412ecddb3a176988f210dc7ebfef16eb5d5f181a17b115597f15", kill_on_drop: false }`
[INFO] [stdout] f62a278b07e1412ecddb3a176988f210dc7ebfef16eb5d5f181a17b115597f15