[INFO] fetching crate rust_twostack 0.15.0...
[INFO] testing rust_twostack-0.15.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rust_twostack 0.15.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rust_twostack 0.15.0
[INFO] finished tweaking crates.io crate rust_twostack 0.15.0
[INFO] tweaked toml for crates.io crate rust_twostack 0.15.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust_twostack 0.15.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 135 packages to latest compatible versions
[INFO] [stderr]       Adding nanoid v0.4.0 (available: v0.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69e1c0d827e9a9bd5cc5bfb41d77a927bbb645738dfa4c3f3ae12306bef11e8c
[INFO] running `Command { std: "docker" "start" "-a" "69e1c0d827e9a9bd5cc5bfb41d77a927bbb645738dfa4c3f3ae12306bef11e8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69e1c0d827e9a9bd5cc5bfb41d77a927bbb645738dfa4c3f3ae12306bef11e8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69e1c0d827e9a9bd5cc5bfb41d77a927bbb645738dfa4c3f3ae12306bef11e8c", kill_on_drop: false }`
[INFO] [stdout] 69e1c0d827e9a9bd5cc5bfb41d77a927bbb645738dfa4c3f3ae12306bef11e8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 614951f8e118bf313395cc7d6f4b11138c951f6d273f9a0084f9744c176464c0
[INFO] running `Command { std: "docker" "start" "-a" "614951f8e118bf313395cc7d6f4b11138c951f6d273f9a0084f9744c176464c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling simd-adler32 v0.3.9
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling pathfinder_simd v0.5.6
[INFO] [stderr]    Compiling freetype-sys v0.20.1
[INFO] [stderr]    Compiling yeslogic-fontconfig-sys v6.0.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling fdeflate v0.3.7
[INFO] [stderr]    Compiling libloading v0.8.9
[INFO] [stderr]    Compiling miniz_oxide v0.8.9
[INFO] [stderr]    Compiling option-ext v0.2.0
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling dirs-sys v0.5.0
[INFO] [stderr]    Compiling dlib v0.5.3
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling bytemuck v1.25.0
[INFO] [stderr]    Compiling flate2 v1.1.9
[INFO] [stderr]    Compiling jpeg-decoder v0.3.2
[INFO] [stderr]    Compiling weezl v0.1.12
[INFO] [stderr]    Compiling font-kit v0.14.3
[INFO] [stderr]    Compiling pathfinder_geometry v0.5.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling gif v0.12.0
[INFO] [stderr]    Compiling dirs v6.0.0
[INFO] [stderr]    Compiling png v0.17.16
[INFO] [stderr]    Compiling float-ord v0.3.2
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stderr]    Compiling chrono v0.4.44
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling ttf-parser v0.20.0
[INFO] [stderr]    Compiling image v0.24.9
[INFO] [stderr]    Compiling either v1.15.0
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling unix-ts-macros v1.0.0
[INFO] [stderr]    Compiling nanoid v0.4.0
[INFO] [stderr]    Compiling json_value_merge v2.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling unix-ts v1.0.0
[INFO] [stderr]    Compiling rustils v0.1.23
[INFO] [stderr]    Compiling dtoa v1.0.11
[INFO] [stderr]    Compiling easy-error v1.0.0
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling plotters-bitmap v0.3.7
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling neurons v2.6.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling bincode2 v2.0.1
[INFO] [stderr]    Compiling rust_dynamic v0.49.0
[INFO] [stderr]    Compiling rust_twostack v0.15.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/ts_value.rs:20:48
[INFO] [stdout]    |
[INFO] [stdout] 20 | ...                   return Err(err);
[INFO] [stdout]    |                              --- ^^^ expected `Box<dyn Error>`, found `Error`
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Box<dyn std::error::Error>`
[INFO] [stdout]               found struct `easy_error::Error`
[INFO] [stdout]    = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html
[INFO] [stdout] help: the type constructed contains `easy_error::Error` due to the type of the argument passed
[INFO] [stdout]   --> src/ts_value.rs:20:44
[INFO] [stdout]    |
[INFO] [stdout] 20 | ...                   return Err(err);
[INFO] [stdout]    |                              ^^^^---^
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  this argument influences the type of `Err`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:566:4
[INFO] [stdout] help: store this in the heap by calling `Box::new`
[INFO] [stdout]    |
[INFO] [stdout] 20 |                                     return Err(Box::new(err));
[INFO] [stdout]    |                                                +++++++++   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/ts_value.rs:43:40
[INFO] [stdout]    |
[INFO] [stdout] 43 | ...                   return Err(err);
[INFO] [stdout]    |                              --- ^^^ expected `Box<dyn Error>`, found `Error`
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              arguments to this enum variant are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Box<dyn std::error::Error>`
[INFO] [stdout]               found struct `easy_error::Error`
[INFO] [stdout]    = note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html
[INFO] [stdout] help: the type constructed contains `easy_error::Error` due to the type of the argument passed
[INFO] [stdout]   --> src/ts_value.rs:43:36
[INFO] [stdout]    |
[INFO] [stdout] 43 | ...                   return Err(err);
[INFO] [stdout]    |                              ^^^^---^
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  this argument influences the type of `Err`
[INFO] [stdout] note: tuple variant defined here
[INFO] [stdout]   --> /rustc/8489f1adbe1c8f8921cf18b9962cf565237a5489/library/core/src/result.rs:566:4
[INFO] [stdout] help: store this in the heap by calling `Box::new`
[INFO] [stdout]    |
[INFO] [stdout] 43 |                             return Err(Box::new(err));
[INFO] [stdout]    |                                        +++++++++   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_twostack` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "614951f8e118bf313395cc7d6f4b11138c951f6d273f9a0084f9744c176464c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "614951f8e118bf313395cc7d6f4b11138c951f6d273f9a0084f9744c176464c0", kill_on_drop: false }`
[INFO] [stdout] 614951f8e118bf313395cc7d6f4b11138c951f6d273f9a0084f9744c176464c0
