[INFO] fetching crate simpleton 0.23.1...
[INFO] checking simpleton-0.23.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate simpleton 0.23.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate simpleton 0.23.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simpleton 0.23.1
[INFO] finished tweaking crates.io crate simpleton 0.23.1
[INFO] tweaked toml for crates.io crate simpleton 0.23.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate simpleton 0.23.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded intuicio-frontend-simpleton v0.23.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8ba70e5e9238fc0ce93faf565572f0a0609bebe83edff2ee3db416227d6c0429
[INFO] running `Command { std: "docker" "start" "-a" "8ba70e5e9238fc0ce93faf565572f0a0609bebe83edff2ee3db416227d6c0429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ba70e5e9238fc0ce93faf565572f0a0609bebe83edff2ee3db416227d6c0429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ba70e5e9238fc0ce93faf565572f0a0609bebe83edff2ee3db416227d6c0429", kill_on_drop: false }`
[INFO] [stdout] 8ba70e5e9238fc0ce93faf565572f0a0609bebe83edff2ee3db416227d6c0429
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d65048bb4780a39cd2f42418ab5b7685e32da17c6c0009ff27012c8d0f8ca55
[INFO] running `Command { std: "docker" "start" "-a" "7d65048bb4780a39cd2f42418ab5b7685e32da17c6c0009ff27012c8d0f8ca55", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking hashbrown v0.14.2
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]     Checking indexmap v2.1.0
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking anstyle-parse v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]     Checking winnow v0.5.19
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking anstream v0.6.4
[INFO] [stderr]     Checking rstar v0.10.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking libloading v0.8.1
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking clap_lex v0.6.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking clap_builder v4.4.7
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.190
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]    Compiling serde-intermediate-derive v1.6.0
[INFO] [stderr]    Compiling intuicio-derive v0.23.1
[INFO] [stderr]    Compiling pest v2.7.5
[INFO] [stderr]     Checking snailquote v0.3.1
[INFO] [stderr]     Checking clap v4.4.7
[INFO] [stderr]    Compiling pest_meta v2.7.5
[INFO] [stderr]    Compiling pest_generator v2.7.5
[INFO] [stderr]    Compiling pest_derive v2.7.5
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking serde_spanned v0.6.4
[INFO] [stderr]     Checking toml_datetime v0.6.5
[INFO] [stderr]     Checking serde-intermediate v1.6.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking toml_edit v0.19.15
[INFO] [stderr]     Checking typid v1.1.1
[INFO] [stderr]     Checking intuicio-data v0.23.1
[INFO] [stderr]     Checking intuicio-core v0.23.1
[INFO] [stderr]     Checking toml v0.7.8
[INFO] [stderr]     Checking intuicio-plugins v0.23.1
[INFO] [stderr]     Checking intuicio-backend-vm v0.23.1
[INFO] [stderr]     Checking intuicio-nodes v0.23.1
[INFO] [stderr]     Checking intuicio-frontend-simpleton v0.23.1
[INFO] [stderr]     Checking simpleton v0.23.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.07s
[INFO] running `Command { std: "docker" "inspect" "7d65048bb4780a39cd2f42418ab5b7685e32da17c6c0009ff27012c8d0f8ca55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d65048bb4780a39cd2f42418ab5b7685e32da17c6c0009ff27012c8d0f8ca55", kill_on_drop: false }`
[INFO] [stdout] 7d65048bb4780a39cd2f42418ab5b7685e32da17c6c0009ff27012c8d0f8ca55
[INFO] checking simpleton-0.23.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate simpleton 0.23.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate simpleton 0.23.1 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simpleton 0.23.1
[INFO] finished tweaking crates.io crate simpleton 0.23.1
[INFO] tweaked toml for crates.io crate simpleton 0.23.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate simpleton 0.23.1 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9bb3a53e62df554947aa2a4f68634fdd0f385f9c5b9ff7b3ec886aa7c6cb2019
[INFO] running `Command { std: "docker" "start" "-a" "9bb3a53e62df554947aa2a4f68634fdd0f385f9c5b9ff7b3ec886aa7c6cb2019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9bb3a53e62df554947aa2a4f68634fdd0f385f9c5b9ff7b3ec886aa7c6cb2019", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bb3a53e62df554947aa2a4f68634fdd0f385f9c5b9ff7b3ec886aa7c6cb2019", kill_on_drop: false }`
[INFO] [stdout] 9bb3a53e62df554947aa2a4f68634fdd0f385f9c5b9ff7b3ec886aa7c6cb2019
[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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ce0cd9a32dcc8c276eda9b3c8190e341c69ef128cfbc9069b7befb0ee48ad7a
[INFO] running `Command { std: "docker" "start" "-a" "1ce0cd9a32dcc8c276eda9b3c8190e341c69ef128cfbc9069b7befb0ee48ad7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling serde v1.0.190
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling thiserror v1.0.50
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling semver v1.0.20
[INFO] [stderr]    Compiling once_cell v1.18.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking ucd-trie v0.1.6
[INFO] [stderr]     Checking hashbrown v0.14.2
[INFO] [stderr]    Compiling libm v0.2.8
[INFO] [stderr]     Checking unicode_categories v0.1.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]     Checking memoffset v0.9.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling heapless v0.7.16
[INFO] [stderr]     Checking indexmap v2.1.0
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking utf8parse v0.2.1
[INFO] [stderr]     Checking anstyle-parse v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking colorchoice v1.0.0
[INFO] [stderr]     Checking winnow v0.5.19
[INFO] [stderr]     Checking smallvec v1.11.1
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]     Checking anstyle v1.0.4
[INFO] [stderr]     Checking anstream v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking libloading v0.8.1
[INFO] [stderr]     Checking clap_lex v0.6.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking rstar v0.10.0
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking clap_builder v4.4.7
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.190
[INFO] [stderr]    Compiling thiserror-impl v1.0.50
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]    Compiling serde-intermediate-derive v1.6.0
[INFO] [stderr]    Compiling intuicio-derive v0.23.1
[INFO] [stderr]    Compiling pest v2.7.5
[INFO] [stderr]     Checking snailquote v0.3.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/snailquote-0.3.1/src/lib.rs:253:17
[INFO] [stdout]     |
[INFO] [stdout] 253 | /                 match chars.next() {
[INFO] [stdout] 254 | |                     None => {
[INFO] [stdout] 255 | |                         return Err(UnescapeError::InvalidEscape {
[INFO] [stdout] 256 | |                             escape: format!("{}", c),
[INFO] [stdout] ...   |
[INFO] [stdout] 293 | |                     }
[INFO] [stdout] 294 | |                 };
[INFO] [stdout]     | |_________________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `snailquote` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "1ce0cd9a32dcc8c276eda9b3c8190e341c69ef128cfbc9069b7befb0ee48ad7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce0cd9a32dcc8c276eda9b3c8190e341c69ef128cfbc9069b7befb0ee48ad7a", kill_on_drop: false }`
[INFO] [stdout] 1ce0cd9a32dcc8c276eda9b3c8190e341c69ef128cfbc9069b7befb0ee48ad7a