[INFO] cloning repository https://github.com/AndrewGaspar/pngs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AndrewGaspar/pngs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrewGaspar%2Fpngs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrewGaspar%2Fpngs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46e3bf31dbc51c2851ee52e6b95378360097414e
[INFO] testing AndrewGaspar/pngs against beta-2022-02-22 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrewGaspar%2Fpngs" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AndrewGaspar/pngs on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AndrewGaspar/pngs
[INFO] finished tweaking git repo https://github.com/AndrewGaspar/pngs
[INFO] tweaked toml for git repo https://github.com/AndrewGaspar/pngs written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/AndrewGaspar/pngs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e09288f3ca07af7be8db52f810437f87e6e41e0ef31de5b2883452ad30e711f7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e09288f3ca07af7be8db52f810437f87e6e41e0ef31de5b2883452ad30e711f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e09288f3ca07af7be8db52f810437f87e6e41e0ef31de5b2883452ad30e711f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e09288f3ca07af7be8db52f810437f87e6e41e0ef31de5b2883452ad30e711f7", kill_on_drop: false }`
[INFO] [stdout] e09288f3ca07af7be8db52f810437f87e6e41e0ef31de5b2883452ad30e711f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5107efdd6058d1a0cf407b7481648abe6499471ec2833e2074db8b12f1a31420
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5107efdd6058d1a0cf407b7481648abe6499471ec2833e2074db8b12f1a31420", kill_on_drop: false }`
[INFO] [stderr]    Compiling pngs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/raw.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let bytes_read = try!(buffer.read(&mut bytes[..]));
[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/raw.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(fill_buffer(&mut self.reader, &mut signature));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         try!(ensure_valid_signature(signature));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(fill_buffer(&mut self.reader, &mut word));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             try!(ensure_valid_chunk_type(chunk_type));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             try!(fill_buffer(&mut self.reader, &mut chunk));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |             try!(fill_buffer(&mut self.reader, &mut word));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:208:16
[INFO] [stdout]     |
[INFO] [stdout] 208 |     let file = try!(File::open(&path));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/raw.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn fill_buffer(buffer: &mut Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 - fn fill_buffer(buffer: &mut Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout] 61 + fn fill_buffer(buffer: &mut dyn Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "5107efdd6058d1a0cf407b7481648abe6499471ec2833e2074db8b12f1a31420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5107efdd6058d1a0cf407b7481648abe6499471ec2833e2074db8b12f1a31420", kill_on_drop: false }`
[INFO] [stdout] 5107efdd6058d1a0cf407b7481648abe6499471ec2833e2074db8b12f1a31420
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ec258b990b618b44c1c1f678ea0084ca181a68bc27f398c1ccafeb6509d530eb
[INFO] running `Command { std: "docker" "start" "-a" "ec258b990b618b44c1c1f678ea0084ca181a68bc27f398c1ccafeb6509d530eb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pngs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/raw.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let bytes_read = try!(buffer.read(&mut bytes[..]));
[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/raw.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(fill_buffer(&mut self.reader, &mut signature));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         try!(ensure_valid_signature(signature));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(fill_buffer(&mut self.reader, &mut word));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             try!(ensure_valid_chunk_type(chunk_type));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             try!(fill_buffer(&mut self.reader, &mut chunk));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |             try!(fill_buffer(&mut self.reader, &mut word));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:208:16
[INFO] [stdout]     |
[INFO] [stdout] 208 |     let file = try!(File::open(&path));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/raw.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn fill_buffer(buffer: &mut Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 - fn fill_buffer(buffer: &mut Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout] 61 + fn fill_buffer(buffer: &mut dyn Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/raw.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |     let bytes_read = try!(buffer.read(&mut bytes[..]));
[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/raw.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(fill_buffer(&mut self.reader, &mut signature));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:124:9
[INFO] [stdout]     |
[INFO] [stdout] 124 |         try!(ensure_valid_signature(signature));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:152:13
[INFO] [stdout]     |
[INFO] [stdout] 152 |             try!(fill_buffer(&mut self.reader, &mut word));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             try!(ensure_valid_chunk_type(chunk_type));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:162:13
[INFO] [stdout]     |
[INFO] [stdout] 162 |             try!(fill_buffer(&mut self.reader, &mut chunk));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |             try!(fill_buffer(&mut self.reader, &mut word));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/raw.rs:208:16
[INFO] [stdout]     |
[INFO] [stdout] 208 |     let file = try!(File::open(&path));
[INFO] [stdout]     |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/raw.rs:61:29
[INFO] [stdout]    |
[INFO] [stdout] 61 | fn fill_buffer(buffer: &mut Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout]    |                             ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 61 - fn fill_buffer(buffer: &mut Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout] 61 + fn fill_buffer(buffer: &mut dyn Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.12s
[INFO] running `Command { std: "docker" "inspect" "ec258b990b618b44c1c1f678ea0084ca181a68bc27f398c1ccafeb6509d530eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec258b990b618b44c1c1f678ea0084ca181a68bc27f398c1ccafeb6509d530eb", kill_on_drop: false }`
[INFO] [stdout] ec258b990b618b44c1c1f678ea0084ca181a68bc27f398c1ccafeb6509d530eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 860c944d1fccf1e6a20ce9d48e7cfb1b952fe9a61cf7b995cf999202d8b3bec0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "860c944d1fccf1e6a20ce9d48e7cfb1b952fe9a61cf7b995cf999202d8b3bec0", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout] running 1 test
[INFO] [stderr]   --> src/raw.rs:62:22
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let bytes_read = try!(buffer.read(&mut bytes[..]));
[INFO] [stderr]    |                      ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/raw.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         try!(fill_buffer(&mut self.reader, &mut signature));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/raw.rs:124:9
[INFO] [stderr]     |
[INFO] [stderr] 124 |         try!(ensure_valid_signature(signature));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/raw.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |             try!(fill_buffer(&mut self.reader, &mut word));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/raw.rs:156:13
[INFO] [stderr]     |
[INFO] [stderr] 156 |             try!(ensure_valid_chunk_type(chunk_type));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/raw.rs:162:13
[INFO] [stderr]     |
[INFO] [stderr] 162 |             try!(fill_buffer(&mut self.reader, &mut chunk));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/raw.rs:164:13
[INFO] [stderr]     |
[INFO] [stderr] 164 |             try!(fill_buffer(&mut self.reader, &mut word));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/raw.rs:208:16
[INFO] [stderr]     |
[INFO] [stderr] 208 |     let file = try!(File::open(&path));
[INFO] [stderr]     |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/raw.rs:61:29
[INFO] [stderr]    |
[INFO] [stderr] 61 | fn fill_buffer(buffer: &mut Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stderr]    |                             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 61 - fn fill_buffer(buffer: &mut Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stderr] 61 + fn fill_buffer(buffer: &mut dyn Read, bytes: &mut [u8]) -> Result<()> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `pngs` (lib) generated 9 warnings
[INFO] [stderr] warning: `pngs` (lib test) generated 9 warnings (9 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pngs-3e76bad861952324)
[INFO] [stdout] test raw::tests::standard_chunks ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-fb8b739ae7d4a8d2)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test known_png ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pngs
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "860c944d1fccf1e6a20ce9d48e7cfb1b952fe9a61cf7b995cf999202d8b3bec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "860c944d1fccf1e6a20ce9d48e7cfb1b952fe9a61cf7b995cf999202d8b3bec0", kill_on_drop: false }`
[INFO] [stdout] 860c944d1fccf1e6a20ce9d48e7cfb1b952fe9a61cf7b995cf999202d8b3bec0