[INFO] fetching crate metaemu-microx 0.3.0...
[INFO] checking metaemu-microx-0.3.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate metaemu-microx 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate metaemu-microx 0.3.0 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 metaemu-microx 0.3.0
[INFO] finished tweaking crates.io crate metaemu-microx 0.3.0
[INFO] tweaked toml for crates.io crate metaemu-microx 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 112 packages
[INFO] [stderr]       Adding ahash v0.7.8 (latest: v0.8.11)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cfg_aliases v0.1.1 (latest: v0.2.0)
[INFO] [stderr]       Adding educe v0.4.23 (latest: v0.5.11)
[INFO] [stderr]       Adding enum-ordinalize v3.1.15 (latest: v4.3.0)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding ouroboros v0.9.5 (latest: v0.18.3)
[INFO] [stderr]       Adding ouroboros_macro v0.9.5 (latest: v0.18.3)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.9)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding roxmltree v0.18.1 (latest: v0.19.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding ustr v0.8.1 (latest: v1.0.0)
[INFO] [stderr]       Adding ustr v0.9.0 (latest: v1.0.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding which v4.4.2 (latest: v6.0.1)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded fugue v0.2.8
[INFO] [stderr]   Downloaded metaemu-state-derive v0.3.0
[INFO] [stderr]   Downloaded metaemu-hooks v0.3.0
[INFO] [stderr]   Downloaded ouroboros v0.9.5
[INFO] [stderr]   Downloaded flatc-rust v0.2.0
[INFO] [stderr]   Downloaded ouroboros_macro v0.9.5
[INFO] [stderr]   Downloaded fugue-db v0.2.15
[INFO] [stderr]   Downloaded metaemu-state v0.3.1
[INFO] [stderr]   Downloaded ustr v0.8.1
[INFO] [stderr]   Downloaded ux v0.1.5
[INFO] [stderr]   Downloaded flatcc v23.1.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3ec72914e6d65d8eba5e0e062d41daf623a8ea597257d0bf3ab715952e5107a9
[INFO] running `Command { std: "docker" "start" "-a" "3ec72914e6d65d8eba5e0e062d41daf623a8ea597257d0bf3ab715952e5107a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ec72914e6d65d8eba5e0e062d41daf623a8ea597257d0bf3ab715952e5107a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ec72914e6d65d8eba5e0e062d41daf623a8ea597257d0bf3ab715952e5107a9", kill_on_drop: false }`
[INFO] [stdout] 3ec72914e6d65d8eba5e0e062d41daf623a8ea597257d0bf3ab715952e5107a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 101d1622fc98810554f239701e231774dd2aecdca33e54f2c3a7d839dd5e2160
[INFO] running `Command { std: "docker" "start" "-a" "101d1622fc98810554f239701e231774dd2aecdca33e54f2c3a7d839dd5e2160", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.2
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling static_init_macro v1.0.2
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]    Compiling static_init v1.0.3
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling rug v1.24.1
[INFO] [stderr]     Checking ux v0.1.5
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking xmlparser v0.13.6
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking bumpalo v3.15.4
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]     Checking unsafe_unwrap v0.1.0
[INFO] [stderr]     Checking ahash v0.7.8
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]     Checking roxmltree v0.18.1
[INFO] [stderr]    Compiling metaemu-state-derive v0.3.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking iset v0.2.2
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking ustr v0.9.0
[INFO] [stderr]     Checking ustr v0.8.1
[INFO] [stderr]     Checking fugue-bytes v0.2.2
[INFO] [stderr]     Checking fugue-arch v0.2.4
[INFO] [stderr]     Checking fugue-bv v0.2.35
[INFO] [stderr]     Checking fugue-ir v0.2.92
[INFO] [stderr]     Checking fugue v0.2.8
[INFO] [stderr]     Checking metaemu-state v0.3.1
[INFO] [stderr]     Checking metaemu-hooks v0.3.0
[INFO] [stderr]     Checking metaemu-microx v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 06s
[INFO] running `Command { std: "docker" "inspect" "101d1622fc98810554f239701e231774dd2aecdca33e54f2c3a7d839dd5e2160", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "101d1622fc98810554f239701e231774dd2aecdca33e54f2c3a7d839dd5e2160", kill_on_drop: false }`
[INFO] [stdout] 101d1622fc98810554f239701e231774dd2aecdca33e54f2c3a7d839dd5e2160
[INFO] checking metaemu-microx-0.3.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate metaemu-microx 0.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate metaemu-microx 0.3.0 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 metaemu-microx 0.3.0
[INFO] finished tweaking crates.io crate metaemu-microx 0.3.0
[INFO] tweaked toml for crates.io crate metaemu-microx 0.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f814a849bb6fb573ecebd912daef41c79811b68a1b51eda090b07683f0516c30
[INFO] running `Command { std: "docker" "start" "-a" "f814a849bb6fb573ecebd912daef41c79811b68a1b51eda090b07683f0516c30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f814a849bb6fb573ecebd912daef41c79811b68a1b51eda090b07683f0516c30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f814a849bb6fb573ecebd912daef41c79811b68a1b51eda090b07683f0516c30", kill_on_drop: false }`
[INFO] [stdout] f814a849bb6fb573ecebd912daef41c79811b68a1b51eda090b07683f0516c30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] eb6842bf43befc02b5944fdb3cdc945c6f4d25b5af23f5b88316b36c13ea84fe
[INFO] running `Command { std: "docker" "start" "-a" "eb6842bf43befc02b5944fdb3cdc945c6f4d25b5af23f5b88316b36c13ea84fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling az v1.2.1
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling static_init_macro v1.0.2
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]    Compiling static_init v1.0.3
[INFO] [stderr]    Compiling rug v1.24.1
[INFO] [stderr]     Checking ux v0.1.5
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking unicase v2.7.0
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking xmlparser v0.13.6
[INFO] [stderr]     Checking ahash v0.7.8
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking unsafe_unwrap v0.1.0
[INFO] [stderr]     Checking bumpalo v3.15.4
[INFO] [stderr]    Compiling either v1.10.0
[INFO] [stderr]     Checking roxmltree v0.18.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bumpalo-3.15.4/src/collections/str/lossy.rs:82:28
[INFO] [stdout]    |
[INFO] [stdout] 82 |                       () => {{
[INFO] [stdout]    |  ____________________________^
[INFO] [stdout] 83 | |                         unsafe {
[INFO] [stdout] 84 | |                             let r = Utf8LossyChunk {
[INFO] [stdout] 85 | |                                 valid: str::from_utf8_unchecked(&self.source[0..i_]),
[INFO] [stdout] ...  |
[INFO] [stdout] 90 | |                         }
[INFO] [stdout] 91 | |                     }};
[INFO] [stdout]    | |_____________________^ cannot infer type
[INFO] [stdout] ...
[INFO] [stdout] 97 |                               error!();
[INFO] [stdout]    |                               -------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling itertools v0.10.5
[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 `bumpalo` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "eb6842bf43befc02b5944fdb3cdc945c6f4d25b5af23f5b88316b36c13ea84fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb6842bf43befc02b5944fdb3cdc945c6f4d25b5af23f5b88316b36c13ea84fe", kill_on_drop: false }`
[INFO] [stdout] eb6842bf43befc02b5944fdb3cdc945c6f4d25b5af23f5b88316b36c13ea84fe