[INFO] fetching crate libasciic 1.1.1...
[INFO] testing libasciic-1.1.1 against beta-2026-01-20 for beta-1.94-1
[INFO] extracting crate libasciic 1.1.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate libasciic 1.1.1
[INFO] finished tweaking crates.io crate libasciic 1.1.1
[INFO] tweaked toml for crates.io crate libasciic 1.1.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate libasciic 1.1.1 on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate libasciic 1.1.1 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" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ddb6b256e1d5e74266b2705c89a91a5dff0eb4b20edc5684285c81adb34b85d0
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[INFO] running `Command { std: "docker" "rm" "-f" "ddb6b256e1d5e74266b2705c89a91a5dff0eb4b20edc5684285c81adb34b85d0", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db2296d8cd19285e0e3087766b937a8eef3bee60168e7f0f3f426802001277f7
[INFO] running `Command { std: "docker" "start" "-a" "db2296d8cd19285e0e3087766b937a8eef3bee60168e7f0f3f426802001277f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling as-slice v0.2.1
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[INFO] [stderr]    Compiling tiff v0.10.3
[INFO] [stderr]    Compiling exr v1.74.0
[INFO] [stderr]    Compiling ravif v0.12.0
[INFO] [stderr]    Compiling image v0.25.9
[INFO] [stderr]    Compiling libasciic v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.13s
[INFO] running `Command { std: "docker" "inspect" "db2296d8cd19285e0e3087766b937a8eef3bee60168e7f0f3f426802001277f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db2296d8cd19285e0e3087766b937a8eef3bee60168e7f0f3f426802001277f7", kill_on_drop: false }`
[INFO] [stdout] db2296d8cd19285e0e3087766b937a8eef3bee60168e7f0f3f426802001277f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6c807b92975a5d7d926acc99be49d2691f14bf5a76f7cb2334d8673304b93dc
[INFO] running `Command { std: "docker" "start" "-a" "f6c807b92975a5d7d926acc99be49d2691f14bf5a76f7cb2334d8673304b93dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libasciic v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "f6c807b92975a5d7d926acc99be49d2691f14bf5a76f7cb2334d8673304b93dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6c807b92975a5d7d926acc99be49d2691f14bf5a76f7cb2334d8673304b93dc", kill_on_drop: false }`
[INFO] [stdout] f6c807b92975a5d7d926acc99be49d2691f14bf5a76f7cb2334d8673304b93dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] aa893410f9001143cad3d9fc96d2e32ea802a5f202ebe58da988279eb7e73478
[INFO] running `Command { std: "docker" "start" "-a" "aa893410f9001143cad3d9fc96d2e32ea802a5f202ebe58da988279eb7e73478", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/libasciic-6c741a65fa346e1d)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests libasciic
[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 4 tests
[INFO] [stdout] test src/lib.rs - AsciiBuilder<R>::charset (line 407) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - (line 11) - compile ... FAILED
[INFO] [stdout] test src/lib.rs - Charset::mkcharset (line 159) - compile ... ok
[INFO] [stdout] test src/lib.rs - AsciiBuilder (line 200) - compile ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - AsciiBuilder<R>::charset (line 407) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:411:35
[INFO] [stdout]     |
[INFO] [stdout] 408 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_407_0() {
[INFO] [stdout]     |                                      ----------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 411 | let file = File::open("image.png")?;
[INFO] [stdout]     |                                   ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]     |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]     |
[INFO] [stdout] 408 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_407_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 409 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 413 |     .charset(".'`^\",:;Il!i><~+_-?][}{1)(|\\/tfjrxnuvczXYUJCLQ0OZmwqpdbkhao*#MW&8%B@$");
[INFO] [stdout] 414 +     Ok(())
[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 E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - (line 11) stdout ----
[INFO] [stdout] error[E0425]: cannot find type `AsciiError` in this scope
[INFO] [stdout]   --> src/lib.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | Ok::<(), AsciiError>(())
[INFO] [stdout]    |          ^^^^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this enum
[INFO] [stdout]    |
[INFO] [stdout] 10 + use libasciic::AsciiError;
[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 E0425`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - AsciiBuilder (line 200) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:205:35
[INFO] [stdout]     |
[INFO] [stdout] 201 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_200_0() {
[INFO] [stdout]     |                                      ----------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 205 | let file = File::open("photo.jpg")?;
[INFO] [stdout]     |                                   ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]     |
[INFO] [stdout] help: consider adding return type
[INFO] [stdout]     |
[INFO] [stdout] 201 ~ fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_200_0() -> Result<(), Box<dyn std::error::Error>> {
[INFO] [stdout] 202 | use std::fs::File;
[INFO] [stdout] ...
[INFO] [stdout] 213 |     .make_ascii()?;
[INFO] [stdout] 214 +     Ok(())
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]    --> src/lib.rs:206:13
[INFO] [stdout]     |
[INFO] [stdout] 206 |   let ascii = AsciiBuilder::new(file)
[INFO] [stdout]     |  _____________^
[INFO] [stdout] 207 | |     .dimensions(100, 50)
[INFO] [stdout] 208 | |     .colorize(true)
[INFO] [stdout] 209 | |     .style(Style::BgPaint)
[INFO] [stdout] 210 | |     .threshold(15)
[INFO] [stdout] 211 | |     .charset(".:;+=xX$@")?
[INFO] [stdout]     | |__________________________^ the `?` operator cannot be applied to type `AsciiBuilder<File>`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the nightly-only, unstable trait `Try` is not implemented for `AsciiBuilder<File>`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]    --> src/lib.rs:211:26
[INFO] [stdout]     |
[INFO] [stdout] 201 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_200_0() {
[INFO] [stdout]     |                                      ----------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 211 |     .charset(".:;+=xX$@")?
[INFO] [stdout]     |                          ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:206:13
[INFO] [stdout]     |
[INFO] [stdout] 206 |   let ascii = AsciiBuilder::new(file)
[INFO] [stdout]     |  _____________^
[INFO] [stdout] 207 | |     .dimensions(100, 50)
[INFO] [stdout] 208 | |     .colorize(true)
[INFO] [stdout] 209 | |     .style(Style::BgPaint)
[INFO] [stdout] 210 | |     .threshold(15)
[INFO] [stdout] 211 | |     .charset(".:;+=xX$@")?
[INFO] [stdout]     | |__________________________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0282.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 11)
[INFO] [stdout]     src/lib.rs - AsciiBuilder (line 200)
[INFO] [stdout]     src/lib.rs - AsciiBuilder<R>::charset (line 407)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.32s; merged doctests compilation took 0.14s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "aa893410f9001143cad3d9fc96d2e32ea802a5f202ebe58da988279eb7e73478", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa893410f9001143cad3d9fc96d2e32ea802a5f202ebe58da988279eb7e73478", kill_on_drop: false }`
[INFO] [stdout] aa893410f9001143cad3d9fc96d2e32ea802a5f202ebe58da988279eb7e73478
