[INFO] fetching crate ramp-maker 0.2.0...
[INFO] checking ramp-maker-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate ramp-maker 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ramp-maker 0.2.0 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 ramp-maker 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ramp-maker 0.2.0
[INFO] tweaked toml for crates.io crate ramp-maker 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate ramp-maker 0.2.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded approx v0.4.0
[INFO] [stderr]   Downloaded fixed-sqrt v0.2.4
[INFO] [stderr]   Downloaded az v1.1.0
[INFO] [stderr]   Downloaded fixed v1.6.0
[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] d19e24faa248684324c0c69b65c2ee5bb3e9cd16723562ab33fc5662a1f513b4
[INFO] running `Command { std: "docker" "start" "-a" "d19e24faa248684324c0c69b65c2ee5bb3e9cd16723562ab33fc5662a1f513b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d19e24faa248684324c0c69b65c2ee5bb3e9cd16723562ab33fc5662a1f513b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d19e24faa248684324c0c69b65c2ee5bb3e9cd16723562ab33fc5662a1f513b4", kill_on_drop: false }`
[INFO] [stdout] d19e24faa248684324c0c69b65c2ee5bb3e9cd16723562ab33fc5662a1f513b4
[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] ab71bfb5b28d917954e22f0de7c8ce113ec1fc256410e8dbe4df6a2d2ae3339a
[INFO] running `Command { std: "docker" "start" "-a" "ab71bfb5b28d917954e22f0de7c8ce113ec1fc256410e8dbe4df6a2d2ae3339a", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling fixed v1.6.0
[INFO] [stderr]     Checking az v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking fixed-sqrt v0.2.4
[INFO] [stderr]     Checking ramp-maker v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.08s
[INFO] running `Command { std: "docker" "inspect" "ab71bfb5b28d917954e22f0de7c8ce113ec1fc256410e8dbe4df6a2d2ae3339a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab71bfb5b28d917954e22f0de7c8ce113ec1fc256410e8dbe4df6a2d2ae3339a", kill_on_drop: false }`
[INFO] [stdout] ab71bfb5b28d917954e22f0de7c8ce113ec1fc256410e8dbe4df6a2d2ae3339a
[INFO] checking ramp-maker-0.2.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate ramp-maker 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ramp-maker 0.2.0 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 ramp-maker 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ramp-maker 0.2.0
[INFO] tweaked toml for crates.io crate ramp-maker 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate ramp-maker 0.2.0 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 95ffa9ee3293b5f0740782801b39d64a4c49f577911fb09d5aa4da50d9161267
[INFO] running `Command { std: "docker" "start" "-a" "95ffa9ee3293b5f0740782801b39d64a4c49f577911fb09d5aa4da50d9161267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95ffa9ee3293b5f0740782801b39d64a4c49f577911fb09d5aa4da50d9161267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95ffa9ee3293b5f0740782801b39d64a4c49f577911fb09d5aa4da50d9161267", kill_on_drop: false }`
[INFO] [stdout] 95ffa9ee3293b5f0740782801b39d64a4c49f577911fb09d5aa4da50d9161267
[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] 1ee607333845b01ba19533bf6ad0a92d94f0b085729bdd83506bbfd975aa50c8
[INFO] running `Command { std: "docker" "start" "-a" "1ee607333845b01ba19533bf6ad0a92d94f0b085729bdd83506bbfd975aa50c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling fixed v1.6.0
[INFO] [stderr]     Checking az v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking fixed-sqrt v0.2.4
[INFO] [stderr]     Checking ramp-maker v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.95s
[INFO] running `Command { std: "docker" "inspect" "1ee607333845b01ba19533bf6ad0a92d94f0b085729bdd83506bbfd975aa50c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ee607333845b01ba19533bf6ad0a92d94f0b085729bdd83506bbfd975aa50c8", kill_on_drop: false }`
[INFO] [stdout] 1ee607333845b01ba19533bf6ad0a92d94f0b085729bdd83506bbfd975aa50c8