[INFO] fetching crate ops 0.6.0...
[INFO] checking ops-0.6.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate ops 0.6.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ops 0.6.0 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 ops 0.6.0
[INFO] finished tweaking crates.io crate ops 0.6.0
[INFO] tweaked toml for crates.io crate ops 0.6.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate ops 0.6.0 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 waker-set v0.2.0
[INFO] [stderr]   Downloaded memmem v0.1.1
[INFO] [stderr]   Downloaded trillium v0.1.3
[INFO] [stderr]   Downloaded trillium-router v0.1.1
[INFO] [stderr]   Downloaded stopper v0.2.0
[INFO] [stderr]   Downloaded fastrand v1.4.1
[INFO] [stderr]   Downloaded ops-core v0.2.0
[INFO] [stderr]   Downloaded trillium-http v0.1.4
[INFO] [stderr]   Downloaded prometheus v0.11.0
[INFO] [stderr]   Downloaded routefinder v0.3.1
[INFO] [stderr]   Downloaded procfs v0.9.1
[INFO] [stderr]   Downloaded trillium-http-types v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 3a49f89fa6cea0b0fdf2f24f5a947e17fbb8261c73d86c5861c2579223cd6f25
[INFO] running `Command { std: "docker" "start" "-a" "3a49f89fa6cea0b0fdf2f24f5a947e17fbb8261c73d86c5861c2579223cd6f25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a49f89fa6cea0b0fdf2f24f5a947e17fbb8261c73d86c5861c2579223cd6f25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a49f89fa6cea0b0fdf2f24f5a947e17fbb8261c73d86c5861c2579223cd6f25", kill_on_drop: false }`
[INFO] [stdout] 3a49f89fa6cea0b0fdf2f24f5a947e17fbb8261c73d86c5861c2579223cd6f25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7e06c8680844f5ab114bd2a379e27e1ef31ef19f623e6a1508946d6b33ecd6bf
[INFO] running `Command { std: "docker" "start" "-a" "7e06c8680844f5ab114bd2a379e27e1ef31ef19f623e6a1508946d6b33ecd6bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tokio v1.7.1
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling prometheus v0.11.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking ryu v1.0.5
[INFO] [stderr]     Checking procfs v0.9.1
[INFO] [stderr]     Checking httpdate v1.0.1
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking ops-core v0.2.0
[INFO] [stderr]     Checking hyper v0.14.9
[INFO] [stderr]     Checking ops v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.49s
[INFO] running `Command { std: "docker" "inspect" "7e06c8680844f5ab114bd2a379e27e1ef31ef19f623e6a1508946d6b33ecd6bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e06c8680844f5ab114bd2a379e27e1ef31ef19f623e6a1508946d6b33ecd6bf", kill_on_drop: false }`
[INFO] [stdout] 7e06c8680844f5ab114bd2a379e27e1ef31ef19f623e6a1508946d6b33ecd6bf