[INFO] cloning repository https://github.com/dizi-ai/hide_info_png
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dizi-ai/hide_info_png" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdizi-ai%2Fhide_info_png", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdizi-ai%2Fhide_info_png'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 59c62419fe82783c849ef1f03b13e72e63be907e
[INFO] checking dizi-ai/hide_info_png against master#82310651b93a594a3fd69015e1562186a080d94c for pr-145770
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdizi-ai%2Fhide_info_png" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dizi-ai/hide_info_png
[INFO] finished tweaking git repo https://github.com/dizi-ai/hide_info_png
[INFO] tweaked toml for git repo https://github.com/dizi-ai/hide_info_png written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dizi-ai/hide_info_png on toolchain 82310651b93a594a3fd69015e1562186a080d94c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dizi-ai/hide_info_png already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc2c2c60d43d330761f5a4c1a974bcca3f18543501077c64195636ac95b3591f
[INFO] running `Command { std: "docker" "start" "-a" "bc2c2c60d43d330761f5a4c1a974bcca3f18543501077c64195636ac95b3591f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc2c2c60d43d330761f5a4c1a974bcca3f18543501077c64195636ac95b3591f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc2c2c60d43d330761f5a4c1a974bcca3f18543501077c64195636ac95b3591f", kill_on_drop: false }`
[INFO] [stdout] bc2c2c60d43d330761f5a4c1a974bcca3f18543501077c64195636ac95b3591f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+82310651b93a594a3fd69015e1562186a080d94c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9883b9fde093e1599915beddb8f24a333b7b5e029eb95e3d76b01e7e8f8bd0f6
[INFO] running `Command { std: "docker" "start" "-a" "9883b9fde093e1599915beddb8f24a333b7b5e029eb95e3d76b01e7e8f8bd0f6", kill_on_drop: false }`
[INFO] [stderr]     Checking videoreader v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |     let mut png = read_png(&file);
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_chunk` is never used
[INFO] [stdout]   --> src/main.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl PngFile {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn get_chunk(&self, index: usize) -> &PngChunk{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/main.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |         unsafe { std::mem::transmute::<[u8; 4], u32>(self.chunk_crc) }.to_le()
[INFO] [stdout]    |                  -----------------------------------^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: replace this with: `u32::from_ne_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/main.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |         unsafe { std::mem::transmute::<[u8; 4], u32>(chunk_sz) }.to_le()
[INFO] [stdout]    |                  -----------------------------------^^^^^^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: replace this with: `u32::from_ne_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/main.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut len = unsafe { std::mem::transmute::<u32, [u8; 4]>(data.len() as u32) };
[INFO] [stdout]    |                                -----------------------------------^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                help: replace this with: `u32::to_ne_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 |     let mut png = read_png(&file);
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_chunk` is never used
[INFO] [stdout]   --> src/main.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 52 | impl PngFile {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn get_chunk(&self, index: usize) -> &PngChunk{
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/main.rs:23:18
[INFO] [stdout]    |
[INFO] [stdout] 23 |         unsafe { std::mem::transmute::<[u8; 4], u32>(self.chunk_crc) }.to_le()
[INFO] [stdout]    |                  -----------------------------------^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: replace this with: `u32::from_ne_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/main.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |         unsafe { std::mem::transmute::<[u8; 4], u32>(chunk_sz) }.to_le()
[INFO] [stdout]    |                  -----------------------------------^^^^^^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: replace this with: `u32::from_ne_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `from_le_bytes` and `from_be_bytes` if you expect a particular byte order
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/main.rs:37:32
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut len = unsafe { std::mem::transmute::<u32, [u8; 4]>(data.len() as u32) };
[INFO] [stdout]    |                                -----------------------------------^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                                |
[INFO] [stdout]    |                                help: replace this with: `u32::to_ne_bytes`
[INFO] [stdout]    |
[INFO] [stdout]    = help: there's also `to_le_bytes` and `to_be_bytes` if you expect a particular byte order
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "9883b9fde093e1599915beddb8f24a333b7b5e029eb95e3d76b01e7e8f8bd0f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9883b9fde093e1599915beddb8f24a333b7b5e029eb95e3d76b01e7e8f8bd0f6", kill_on_drop: false }`
[INFO] [stdout] 9883b9fde093e1599915beddb8f24a333b7b5e029eb95e3d76b01e7e8f8bd0f6
