[INFO] fetching crate devpng 0.1.2...
[INFO] testing devpng-0.1.2 against beta-2024-12-08 for beta-1.84.0-4-retry
[INFO] extracting crate devpng 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate devpng 0.1.2 on toolchain beta-2024-12-08
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate devpng 0.1.2
[INFO] finished tweaking crates.io crate devpng 0.1.2
[INFO] tweaked toml for crates.io crate devpng 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-12-08" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+beta-2024-12-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35f54ecb4f0bcdb6bfaa44b30c267de5e2e9189e7b33abaf1e951eaca77947c0
[INFO] running `Command { std: "docker" "start" "-a" "35f54ecb4f0bcdb6bfaa44b30c267de5e2e9189e7b33abaf1e951eaca77947c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35f54ecb4f0bcdb6bfaa44b30c267de5e2e9189e7b33abaf1e951eaca77947c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35f54ecb4f0bcdb6bfaa44b30c267de5e2e9189e7b33abaf1e951eaca77947c0", kill_on_drop: false }`
[INFO] [stdout] 35f54ecb4f0bcdb6bfaa44b30c267de5e2e9189e7b33abaf1e951eaca77947c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ed827d9b0ab4de993863cc2f1d057c171f5af9f18afb3e1e86697560d9d1550
[INFO] running `Command { std: "docker" "start" "-a" "3ed827d9b0ab4de993863cc2f1d057c171f5af9f18afb3e1e86697560d9d1550", kill_on_drop: false }`
[INFO] [stderr]    Compiling devker v0.1.6
[INFO] [stderr]    Compiling devpng v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/bkgd.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct BkgdMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/sbit.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct SbitMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/trns.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct TrnsMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "3ed827d9b0ab4de993863cc2f1d057c171f5af9f18afb3e1e86697560d9d1550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ed827d9b0ab4de993863cc2f1d057c171f5af9f18afb3e1e86697560d9d1550", kill_on_drop: false }`
[INFO] [stdout] 3ed827d9b0ab4de993863cc2f1d057c171f5af9f18afb3e1e86697560d9d1550
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82af1b0948b0882cb5cb38a6b27d764ec3832598b633a69dc884912c15c7ee28
[INFO] running `Command { std: "docker" "start" "-a" "82af1b0948b0882cb5cb38a6b27d764ec3832598b633a69dc884912c15c7ee28", kill_on_drop: false }`
[INFO] [stderr]    Compiling devpng v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/bkgd.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct BkgdMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/sbit.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct SbitMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/trns.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct TrnsMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/bkgd.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct BkgdMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/sbit.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct SbitMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]  --> src/chunk/trns.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct TrnsMut<'a>(&'a mut [u8], ColourType);
[INFO] [stdout]   |            -------                   ^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "82af1b0948b0882cb5cb38a6b27d764ec3832598b633a69dc884912c15c7ee28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82af1b0948b0882cb5cb38a6b27d764ec3832598b633a69dc884912c15c7ee28", kill_on_drop: false }`
[INFO] [stdout] 82af1b0948b0882cb5cb38a6b27d764ec3832598b633a69dc884912c15c7ee28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-12-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 56afe99f8ba167f197e4c261e45a0dd6b6d56f28dacba75d67d35f035063e5a9
[INFO] running `Command { std: "docker" "start" "-a" "56afe99f8ba167f197e4c261e45a0dd6b6d56f28dacba75d67d35f035063e5a9", kill_on_drop: false }`
[INFO] [stderr] warning: field `1` is never read
[INFO] [stderr]  --> src/chunk/bkgd.rs:6:38
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct BkgdMut<'a>(&'a mut [u8], ColourType);
[INFO] [stderr]   |            -------                   ^^^^^^^^^^
[INFO] [stderr]   |            |
[INFO] [stderr]   |            field in this struct
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider removing this field
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `1` is never read
[INFO] [stderr]  --> src/chunk/sbit.rs:6:38
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct SbitMut<'a>(&'a mut [u8], ColourType);
[INFO] [stderr]   |            -------                   ^^^^^^^^^^
[INFO] [stderr]   |            |
[INFO] [stderr]   |            field in this struct
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider removing this field
[INFO] [stderr] 
[INFO] [stderr] warning: field `1` is never read
[INFO] [stderr]  --> src/chunk/trns.rs:6:38
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct TrnsMut<'a>(&'a mut [u8], ColourType);
[INFO] [stderr]   |            -------                   ^^^^^^^^^^
[INFO] [stderr]   |            |
[INFO] [stderr]   |            field in this struct
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider removing this field
[INFO] [stderr] 
[INFO] [stderr] warning: `devpng` (lib) generated 3 warnings
[INFO] [stderr] warning: `devpng` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/devpng-0820c720332f3625)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests devpng
[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] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 4) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 57) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 28) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 4) stdout ----
[INFO] [stdout] error[E0596]: cannot borrow `img` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> src/lib.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 16 |     for x in img.iter_mut() {
[INFO] [stdout]    |              ^^^ cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 13 |     let mut img = png.image();
[INFO] [stdout]    |         +++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 57) stdout ----
[INFO] [stdout] error[E0596]: cannot borrow `img` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> src/lib.rs:72:14
[INFO] [stdout]    |
[INFO] [stdout] 17 |     for x in img.iter_mut() {
[INFO] [stdout]    |              ^^^ cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut img = cache.image();
[INFO] [stdout]    |         +++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 28) stdout ----
[INFO] [stdout] Test executable failed (exit status: 1).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] Error: "Read-only file system (os error 30)"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 28)
[INFO] [stdout]     src/lib.rs - (line 4)
[INFO] [stdout]     src/lib.rs - (line 57)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.46s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "56afe99f8ba167f197e4c261e45a0dd6b6d56f28dacba75d67d35f035063e5a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56afe99f8ba167f197e4c261e45a0dd6b6d56f28dacba75d67d35f035063e5a9", kill_on_drop: false }`
[INFO] [stdout] 56afe99f8ba167f197e4c261e45a0dd6b6d56f28dacba75d67d35f035063e5a9
