[INFO] fetching crate flo_canvas_events 0.3.1...
[INFO] checking flo_canvas_events-0.3.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate flo_canvas_events 0.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate flo_canvas_events 0.3.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flo_canvas_events 0.3.1
[INFO] finished tweaking crates.io crate flo_canvas_events 0.3.1
[INFO] tweaked toml for crates.io crate flo_canvas_events 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages
[INFO] [stderr]       Adding desync v0.7.2 (latest: v0.8.2)
[INFO] [stderr]       Adding flo_curves v0.6.1 (latest: v0.7.2)
[INFO] [stderr]       Adding flo_stream v0.6.0 (latest: v0.7.0)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding roots v0.0.7 (latest: v0.0.8)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded flo_stream v0.6.0
[INFO] [stderr]   Downloaded flo_canvas v0.3.1
[INFO] [stderr]   Downloaded flo_curves v0.6.1
[INFO] [stderr]   Downloaded rust-hsluv v0.1.4
[INFO] [stderr]   Downloaded desync v0.7.2
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1214a2c4045b26742a774a8e640c749471a60f9ee627f0cb132b0cdd17dfcfd
[INFO] running `Command { std: "docker" "start" "-a" "f1214a2c4045b26742a774a8e640c749471a60f9ee627f0cb132b0cdd17dfcfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1214a2c4045b26742a774a8e640c749471a60f9ee627f0cb132b0cdd17dfcfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1214a2c4045b26742a774a8e640c749471a60f9ee627f0cb132b0cdd17dfcfd", kill_on_drop: false }`
[INFO] [stdout] f1214a2c4045b26742a774a8e640c749471a60f9ee627f0cb132b0cdd17dfcfd
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59456f73e8e17dc8323b2f198f9de89ce78d9afeb3fc25e2b7508c7613ceaeca
[INFO] running `Command { std: "docker" "start" "-a" "59456f73e8e17dc8323b2f198f9de89ce78d9afeb3fc25e2b7508c7613ceaeca", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking roots v0.0.7
[INFO] [stderr]     Checking rust-hsluv v0.1.4
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking flo_curves v0.6.1
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking desync v0.7.2
[INFO] [stderr]     Checking flo_stream v0.6.0
[INFO] [stderr]     Checking flo_canvas v0.3.1
[INFO] [stderr]     Checking flo_canvas_events v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.20s
[INFO] running `Command { std: "docker" "inspect" "59456f73e8e17dc8323b2f198f9de89ce78d9afeb3fc25e2b7508c7613ceaeca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59456f73e8e17dc8323b2f198f9de89ce78d9afeb3fc25e2b7508c7613ceaeca", kill_on_drop: false }`
[INFO] [stdout] 59456f73e8e17dc8323b2f198f9de89ce78d9afeb3fc25e2b7508c7613ceaeca
[INFO] checking flo_canvas_events-0.3.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate flo_canvas_events 0.3.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate flo_canvas_events 0.3.1 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flo_canvas_events 0.3.1
[INFO] finished tweaking crates.io crate flo_canvas_events 0.3.1
[INFO] tweaked toml for crates.io crate flo_canvas_events 0.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages
[INFO] [stderr]       Adding desync v0.7.2 (latest: v0.8.2)
[INFO] [stderr]       Adding flo_curves v0.6.1 (latest: v0.7.2)
[INFO] [stderr]       Adding flo_stream v0.6.0 (latest: v0.7.0)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.12.1)
[INFO] [stderr]       Adding roots v0.0.7 (latest: v0.0.8)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f8c4eeaa975074ce5e535b1550f57cfbbecce7925347038741ab09c051cd000
[INFO] running `Command { std: "docker" "start" "-a" "5f8c4eeaa975074ce5e535b1550f57cfbbecce7925347038741ab09c051cd000", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f8c4eeaa975074ce5e535b1550f57cfbbecce7925347038741ab09c051cd000", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f8c4eeaa975074ce5e535b1550f57cfbbecce7925347038741ab09c051cd000", kill_on_drop: false }`
[INFO] [stdout] 5f8c4eeaa975074ce5e535b1550f57cfbbecce7925347038741ab09c051cd000
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b430df0888db42102b79094903595b856c2b577c0b09c4e2191e46c0a55c0e8
[INFO] running `Command { std: "docker" "start" "-a" "6b430df0888db42102b79094903595b856c2b577c0b09c4e2191e46c0a55c0e8", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking roots v0.0.7
[INFO] [stderr]     Checking rust-hsluv v0.1.4
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking flo_curves v0.6.1
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking desync v0.7.2
[INFO] [stderr]     Checking flo_stream v0.6.0
[INFO] [stderr]     Checking flo_canvas v0.3.1
[INFO] [stderr]     Checking flo_canvas_events v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.02s
[INFO] running `Command { std: "docker" "inspect" "6b430df0888db42102b79094903595b856c2b577c0b09c4e2191e46c0a55c0e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b430df0888db42102b79094903595b856c2b577c0b09c4e2191e46c0a55c0e8", kill_on_drop: false }`
[INFO] [stdout] 6b430df0888db42102b79094903595b856c2b577c0b09c4e2191e46c0a55c0e8