[INFO] fetching crate kumoko 0.6.0...
[INFO] checking kumoko-0.6.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate kumoko 0.6.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate kumoko 0.6.0 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 kumoko 0.6.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate kumoko 0.6.0
[INFO] tweaked toml for crates.io crate kumoko 0.6.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate kumoko 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hermit-abi v0.2.6
[INFO] [stderr]   Downloaded backtrace v0.3.67
[INFO] [stderr]   Downloaded addr2line v0.19.0
[INFO] [stderr]   Downloaded miniz_oxide v0.6.2
[INFO] [stderr]   Downloaded object v0.30.4
[INFO] [stderr]   Downloaded syn v2.0.22
[INFO] [stderr]   Downloaded tokio v1.29.0
[INFO] [stderr]   Downloaded num_cpus v1.15.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 17a966cf6c21fccd09b006c86c96aa82eb75a24d751066e46419654467918865
[INFO] running `Command { std: "docker" "start" "-a" "17a966cf6c21fccd09b006c86c96aa82eb75a24d751066e46419654467918865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17a966cf6c21fccd09b006c86c96aa82eb75a24d751066e46419654467918865", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17a966cf6c21fccd09b006c86c96aa82eb75a24d751066e46419654467918865", kill_on_drop: false }`
[INFO] [stdout] 17a966cf6c21fccd09b006c86c96aa82eb75a24d751066e46419654467918865
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a700cd4de6a09b852a8362665eeefc5014df65e261e961c34d7ccb1b7623fe27
[INFO] running `Command { std: "docker" "start" "-a" "a700cd4de6a09b852a8362665eeefc5014df65e261e961c34d7ccb1b7623fe27", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling virtue v0.0.13
[INFO] [stderr]    Compiling tokio v1.29.0
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]    Compiling bincode_derive v2.0.0-rc.3
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]     Checking bincode v2.0.0-rc.3
[INFO] [stderr]    Compiling syn v2.0.22
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking kumoko v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.44s
[INFO] running `Command { std: "docker" "inspect" "a700cd4de6a09b852a8362665eeefc5014df65e261e961c34d7ccb1b7623fe27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a700cd4de6a09b852a8362665eeefc5014df65e261e961c34d7ccb1b7623fe27", kill_on_drop: false }`
[INFO] [stdout] a700cd4de6a09b852a8362665eeefc5014df65e261e961c34d7ccb1b7623fe27
[INFO] checking kumoko-0.6.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate kumoko 0.6.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate kumoko 0.6.0 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 kumoko 0.6.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate kumoko 0.6.0
[INFO] tweaked toml for crates.io crate kumoko 0.6.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate kumoko 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 76ae2fc24fadb8bdf5a98665619d8a9e8605c31e79d9d6b8370dd38a9bd2bc2a
[INFO] running `Command { std: "docker" "start" "-a" "76ae2fc24fadb8bdf5a98665619d8a9e8605c31e79d9d6b8370dd38a9bd2bc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76ae2fc24fadb8bdf5a98665619d8a9e8605c31e79d9d6b8370dd38a9bd2bc2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76ae2fc24fadb8bdf5a98665619d8a9e8605c31e79d9d6b8370dd38a9bd2bc2a", kill_on_drop: false }`
[INFO] [stdout] 76ae2fc24fadb8bdf5a98665619d8a9e8605c31e79d9d6b8370dd38a9bd2bc2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 1353beb1f30a803147aabad1e65346dc56be2ef0808aa543823fbbf6d9e2a722
[INFO] running `Command { std: "docker" "start" "-a" "1353beb1f30a803147aabad1e65346dc56be2ef0808aa543823fbbf6d9e2a722", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.63
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling virtue v0.0.13
[INFO] [stderr]    Compiling tokio v1.29.0
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]    Compiling bincode_derive v2.0.0-rc.3
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling syn v2.0.22
[INFO] [stderr]     Checking bincode v2.0.0-rc.3
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking kumoko v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.47s
[INFO] running `Command { std: "docker" "inspect" "1353beb1f30a803147aabad1e65346dc56be2ef0808aa543823fbbf6d9e2a722", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1353beb1f30a803147aabad1e65346dc56be2ef0808aa543823fbbf6d9e2a722", kill_on_drop: false }`
[INFO] [stdout] 1353beb1f30a803147aabad1e65346dc56be2ef0808aa543823fbbf6d9e2a722