[INFO] updating cached repository https://github.com/wpovell/img-rs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 88f0e2751199b6496e26e9fc0f6541017533bb81
[INFO] checking wpovell/img-rs against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwpovell%2Fimg-rs" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wpovell/img-rs on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/wpovell/img-rs
[INFO] finished tweaking git repo https://github.com/wpovell/img-rs
[INFO] tweaked toml for git repo https://github.com/wpovell/img-rs written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/wpovell/img-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fd612cbdfcbf72a3e65497b2726475f476f96829a1fb40bb38a6444f7481f466
[INFO] running `"docker" "start" "-a" "fd612cbdfcbf72a3e65497b2726475f476f96829a1fb40bb38a6444f7481f466"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking img v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/png/crc.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 (v >> 1)
[INFO] [stderr]    |                 ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:11:45
[INFO] [stderr]    |
[INFO] [stderr] 11 | type Result<T> = std::result::Result<T, Box<error::Error>>;
[INFO] [stderr]    |                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/chunk/mod.rs:12:45
[INFO] [stderr]    |
[INFO] [stderr] 12 | type Result<T> = std::result::Result<T, Box<error::Error>>;
[INFO] [stderr]    |                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/chunk/mod.rs:20:40
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn parse(buf: &[u8]) -> Result<Box<Chunk>> {
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Chunk`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/err.rs:38:32
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/mod.rs:15:45
[INFO] [stderr]    |
[INFO] [stderr] 15 | type Result<T> = std::result::Result<T, Box<error::Error>>;
[INFO] [stderr]    |                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/mod.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |     chunks: Vec<Box<chunk::Chunk>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn chunk::Chunk`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/mod.rs:30:24
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse(buf: &mut Read) -> Result<Png> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/png/crc.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |                 (v >> 1)
[INFO] [stderr]    |                 ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:11:45
[INFO] [stderr]    |
[INFO] [stderr] 11 | type Result<T> = std::result::Result<T, Box<error::Error>>;
[INFO] [stderr]    |                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/chunk/mod.rs:12:45
[INFO] [stderr]    |
[INFO] [stderr] 12 | type Result<T> = std::result::Result<T, Box<error::Error>>;
[INFO] [stderr]    |                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/chunk/mod.rs:20:40
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub fn parse(buf: &[u8]) -> Result<Box<Chunk>> {
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Chunk`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/err.rs:38:32
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/mod.rs:15:45
[INFO] [stderr]    |
[INFO] [stderr] 15 | type Result<T> = std::result::Result<T, Box<error::Error>>;
[INFO] [stderr]    |                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/mod.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |     chunks: Vec<Box<chunk::Chunk>>,
[INFO] [stderr]    |                     ^^^^^^^^^^^^ help: use `dyn`: `dyn chunk::Chunk`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/png/mod.rs:30:24
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse(buf: &mut Read) -> Result<Png> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `width`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     width: u32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `height`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     height: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `bit_depth`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     bit_depth: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `color_type`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     color_type: ColorType,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `interlace`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     interlace: InterlaceMethod,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `width`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     width: u32,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `height`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     height: u32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `bit_depth`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     bit_depth: u8,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `color_type`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     color_type: ColorType,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `interlace`
[INFO] [stderr]   --> src/png/chunk/ihdr.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     interlace: InterlaceMethod,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "fd612cbdfcbf72a3e65497b2726475f476f96829a1fb40bb38a6444f7481f466"`
[INFO] running `"docker" "rm" "-f" "fd612cbdfcbf72a3e65497b2726475f476f96829a1fb40bb38a6444f7481f466"`
[INFO] [stdout] fd612cbdfcbf72a3e65497b2726475f476f96829a1fb40bb38a6444f7481f466