[INFO] cloning repository https://github.com/azazak123/15-puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/azazak123/15-puzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazazak123%2F15-puzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazazak123%2F15-puzzle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c3a785c43f2aeeb68e18f1a3b4c2de7712f8485
[INFO] checking azazak123/15-puzzle against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazazak123%2F15-puzzle" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/azazak123/15-puzzle 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 git repo https://github.com/azazak123/15-puzzle
[INFO] finished tweaking git repo https://github.com/azazak123/15-puzzle
[INFO] tweaked toml for git repo https://github.com/azazak123/15-puzzle written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/azazak123/15-puzzle 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 rand v0.8.4
[INFO] [stderr]   Downloaded rand_hc v0.3.1
[INFO] [stderr]   Downloaded getrandom v0.2.3
[INFO] [stderr]   Downloaded rand_chacha v0.3.1
[INFO] [stderr]   Downloaded libc v0.2.97
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.10
[INFO] [stderr]   Downloaded wasi v0.10.2+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded rand_core v0.6.3
[INFO] [stderr]   Downloaded scopeguard v1.1.0
[INFO] [stderr]   Downloaded crossterm_winapi v0.8.0
[INFO] [stderr]   Downloaded bitflags v1.2.1
[INFO] [stderr]   Downloaded lock_api v0.4.4
[INFO] [stderr]   Downloaded instant v0.1.9
[INFO] [stderr]   Downloaded redox_syscall v0.2.9
[INFO] [stderr]   Downloaded smallvec v1.6.1
[INFO] [stderr]   Downloaded parking_lot_core v0.8.3
[INFO] [stderr]   Downloaded parking_lot v0.11.1
[INFO] [stderr]   Downloaded log v0.4.14
[INFO] [stderr]   Downloaded miow v0.3.7
[INFO] [stderr]   Downloaded winapi v0.3.9
[INFO] [stderr]   Downloaded ntapi v0.3.6
[INFO] [stderr]   Downloaded mio v0.7.13
[INFO] [stderr]   Downloaded signal-hook-registry v1.4.0
[INFO] [stderr]   Downloaded signal-hook v0.3.9
[INFO] [stderr]   Downloaded signal-hook-mio v0.2.1
[INFO] [stderr]   Downloaded winapi-x86_64-pc-windows-gnu v0.4.0
[INFO] [stderr]   Downloaded winapi-i686-pc-windows-gnu v0.4.0
[INFO] [stderr]   Downloaded crossterm v0.20.0
[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] a5d012e35b170b1c3da416300402e73d4384ac8fa705c6feec19e30fa8d29904
[INFO] running `Command { std: "docker" "start" "-a" "a5d012e35b170b1c3da416300402e73d4384ac8fa705c6feec19e30fa8d29904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5d012e35b170b1c3da416300402e73d4384ac8fa705c6feec19e30fa8d29904", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5d012e35b170b1c3da416300402e73d4384ac8fa705c6feec19e30fa8d29904", kill_on_drop: false }`
[INFO] [stdout] a5d012e35b170b1c3da416300402e73d4384ac8fa705c6feec19e30fa8d29904
[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] e0b25f6b00758d994ef0a88ec28758cd173970d1acf4379537635b58360585a0
[INFO] running `Command { std: "docker" "start" "-a" "e0b25f6b00758d994ef0a88ec28758cd173970d1acf4379537635b58360585a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking crossterm v0.20.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking pyatnashki v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "e0b25f6b00758d994ef0a88ec28758cd173970d1acf4379537635b58360585a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0b25f6b00758d994ef0a88ec28758cd173970d1acf4379537635b58360585a0", kill_on_drop: false }`
[INFO] [stdout] e0b25f6b00758d994ef0a88ec28758cd173970d1acf4379537635b58360585a0
[INFO] checking azazak123/15-puzzle against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fazazak123%2F15-puzzle" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/azazak123/15-puzzle 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 git repo https://github.com/azazak123/15-puzzle
[INFO] finished tweaking git repo https://github.com/azazak123/15-puzzle
[INFO] tweaked toml for git repo https://github.com/azazak123/15-puzzle written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/azazak123/15-puzzle 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-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] fb7ef540eecd4bf6bba94c53f413b4ba4902f461825af79b7eb63c23a916b90e
[INFO] running `Command { std: "docker" "start" "-a" "fb7ef540eecd4bf6bba94c53f413b4ba4902f461825af79b7eb63c23a916b90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb7ef540eecd4bf6bba94c53f413b4ba4902f461825af79b7eb63c23a916b90e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb7ef540eecd4bf6bba94c53f413b4ba4902f461825af79b7eb63c23a916b90e", kill_on_drop: false }`
[INFO] [stdout] fb7ef540eecd4bf6bba94c53f413b4ba4902f461825af79b7eb63c23a916b90e
[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] 193c07ae6fbdb36e9d9bc9f66d3c82434311cbc201de74e7e01fed17d8035ce6
[INFO] running `Command { std: "docker" "start" "-a" "193c07ae6fbdb36e9d9bc9f66d3c82434311cbc201de74e7e01fed17d8035ce6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/signal-hook-registry-1.4.0/src/half_lock.rs:145:13
[INFO] [stdout]     |
[INFO] [stdout] 145 |             unsafe { libc::abort() };
[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]     Checking rand_core v0.6.3
[INFO] [stderr] error: could not compile `signal-hook-registry` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "193c07ae6fbdb36e9d9bc9f66d3c82434311cbc201de74e7e01fed17d8035ce6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "193c07ae6fbdb36e9d9bc9f66d3c82434311cbc201de74e7e01fed17d8035ce6", kill_on_drop: false }`
[INFO] [stdout] 193c07ae6fbdb36e9d9bc9f66d3c82434311cbc201de74e7e01fed17d8035ce6