[INFO] fetching crate mini-redis 0.4.1...
[INFO] checking mini-redis-0.4.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate mini-redis 0.4.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate mini-redis 0.4.1 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 mini-redis 0.4.1
[INFO] finished tweaking crates.io crate mini-redis 0.4.1
[INFO] tweaked toml for crates.io crate mini-redis 0.4.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate mini-redis 0.4.1 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]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-attributes v0.1.15
[INFO] [stderr]   Downloaded sharded-slab v0.1.1
[INFO] [stderr]   Downloaded atoi v0.3.3
[INFO] [stderr]   Downloaded tracing-subscriber v0.2.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 1bb6fafb3c8390b06185b1ac52fce31f926ac3dcd399207d7ea52a23b43c5f12
[INFO] running `Command { std: "docker" "start" "-a" "1bb6fafb3c8390b06185b1ac52fce31f926ac3dcd399207d7ea52a23b43c5f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bb6fafb3c8390b06185b1ac52fce31f926ac3dcd399207d7ea52a23b43c5f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bb6fafb3c8390b06185b1ac52fce31f926ac3dcd399207d7ea52a23b43c5f12", kill_on_drop: false }`
[INFO] [stdout] 1bb6fafb3c8390b06185b1ac52fce31f926ac3dcd399207d7ea52a23b43c5f12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 912ab134e06dde165406f7e8097b4401fdcee06bc8ad1fcdc66e728d92973d97
[INFO] running `Command { std: "docker" "start" "-a" "912ab134e06dde165406f7e8097b4401fdcee06bc8ad1fcdc66e728d92973d97", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling tokio v1.8.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking atoi v0.3.3
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling async-stream-impl v0.3.2
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]     Checking async-stream v0.3.2
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking tracing-subscriber v0.2.19
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking structopt v0.3.22
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking tokio-stream v0.1.7
[INFO] [stderr]     Checking mini-redis v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.98s
[INFO] running `Command { std: "docker" "inspect" "912ab134e06dde165406f7e8097b4401fdcee06bc8ad1fcdc66e728d92973d97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "912ab134e06dde165406f7e8097b4401fdcee06bc8ad1fcdc66e728d92973d97", kill_on_drop: false }`
[INFO] [stdout] 912ab134e06dde165406f7e8097b4401fdcee06bc8ad1fcdc66e728d92973d97
[INFO] checking mini-redis-0.4.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate mini-redis 0.4.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate mini-redis 0.4.1 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 mini-redis 0.4.1
[INFO] finished tweaking crates.io crate mini-redis 0.4.1
[INFO] tweaked toml for crates.io crate mini-redis 0.4.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate mini-redis 0.4.1 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] db0e495a0c3434f2a0176d8a0bba2fea35006cf8f10d519b2abe4100cdbced6b
[INFO] running `Command { std: "docker" "start" "-a" "db0e495a0c3434f2a0176d8a0bba2fea35006cf8f10d519b2abe4100cdbced6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db0e495a0c3434f2a0176d8a0bba2fea35006cf8f10d519b2abe4100cdbced6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db0e495a0c3434f2a0176d8a0bba2fea35006cf8f10d519b2abe4100cdbced6b", kill_on_drop: false }`
[INFO] [stdout] db0e495a0c3434f2a0176d8a0bba2fea35006cf8f10d519b2abe4100cdbced6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d9cfdfc9af3d021308f8fc955c4ef5670bdc5051c2d51592adf31c051b2c8cb6
[INFO] running `Command { std: "docker" "start" "-a" "d9cfdfc9af3d021308f8fc955c4ef5670bdc5051c2d51592adf31c051b2c8cb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]    Compiling tokio v1.8.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[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] 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" "d9cfdfc9af3d021308f8fc955c4ef5670bdc5051c2d51592adf31c051b2c8cb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9cfdfc9af3d021308f8fc955c4ef5670bdc5051c2d51592adf31c051b2c8cb6", kill_on_drop: false }`
[INFO] [stdout] d9cfdfc9af3d021308f8fc955c4ef5670bdc5051c2d51592adf31c051b2c8cb6