[INFO] fetching crate astral-engine 0.0.3...
[INFO] checking astral-engine-0.0.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate astral-engine 0.0.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate astral-engine 0.0.3 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 astral-engine 0.0.3
[INFO] finished tweaking crates.io crate astral-engine 0.0.3
[INFO] tweaked toml for crates.io crate astral-engine 0.0.3 written to /workspace/builds/worker-2-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 68 packages
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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 dirs-next v2.0.0
[INFO] [stderr]   Downloaded thread_local v1.1.8
[INFO] [stderr]   Downloaded term v0.7.0
[INFO] [stderr]   Downloaded dirs-sys-next v0.1.2
[INFO] [stderr]   Downloaded is-terminal v0.4.12
[INFO] [stderr]   Downloaded slog v2.7.0
[INFO] [stderr]   Downloaded take_mut v0.2.2
[INFO] [stderr]   Downloaded slog-async v2.8.0
[INFO] [stderr]   Downloaded slog-term v2.9.1
[INFO] [stderr]   Downloaded astral-error v0.0.5
[INFO] [stderr]   Downloaded astral-math v0.0.3
[INFO] [stderr]   Downloaded astral-util v0.0.5
[INFO] [stderr]   Downloaded astral-string v0.0.5
[INFO] [stderr]   Downloaded astral-thirdparty v0.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ebf159d567354d8a92920c6b81b3ca1b699f24a65938a93c6e403f3748348cb7
[INFO] running `Command { std: "docker" "start" "-a" "ebf159d567354d8a92920c6b81b3ca1b699f24a65938a93c6e403f3748348cb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebf159d567354d8a92920c6b81b3ca1b699f24a65938a93c6e403f3748348cb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebf159d567354d8a92920c6b81b3ca1b699f24a65938a93c6e403f3748348cb7", kill_on_drop: false }`
[INFO] [stdout] ebf159d567354d8a92920c6b81b3ca1b699f24a65938a93c6e403f3748348cb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f515b414a1d126aca639b2bb0dd901a1c63e2c7e8de5eb88dbe65f8234a5eed8
[INFO] running `Command { std: "docker" "start" "-a" "f515b414a1d126aca639b2bb0dd901a1c63e2c7e8de5eb88dbe65f8234a5eed8", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]    Compiling slog-async v2.8.0
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking astral-util v0.0.5
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking astral-math v0.0.3
[INFO] [stderr]     Checking astral-error v0.0.5
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]    Compiling time-macros v0.2.17
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking slog-term v2.9.1
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking astral-thirdparty v0.0.2
[INFO] [stderr]     Checking astral-string v0.0.5
[INFO] [stderr]     Checking astral-engine v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.94s
[INFO] running `Command { std: "docker" "inspect" "f515b414a1d126aca639b2bb0dd901a1c63e2c7e8de5eb88dbe65f8234a5eed8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f515b414a1d126aca639b2bb0dd901a1c63e2c7e8de5eb88dbe65f8234a5eed8", kill_on_drop: false }`
[INFO] [stdout] f515b414a1d126aca639b2bb0dd901a1c63e2c7e8de5eb88dbe65f8234a5eed8
[INFO] checking astral-engine-0.0.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate astral-engine 0.0.3 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate astral-engine 0.0.3 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 astral-engine 0.0.3
[INFO] finished tweaking crates.io crate astral-engine 0.0.3
[INFO] tweaked toml for crates.io crate astral-engine 0.0.3 written to /workspace/builds/worker-2-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 68 packages
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] b46fa9f2a0904387bf1da064e3f0761facbefbe61cc3f60d10b64fdce46210b0
[INFO] running `Command { std: "docker" "start" "-a" "b46fa9f2a0904387bf1da064e3f0761facbefbe61cc3f60d10b64fdce46210b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b46fa9f2a0904387bf1da064e3f0761facbefbe61cc3f60d10b64fdce46210b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b46fa9f2a0904387bf1da064e3f0761facbefbe61cc3f60d10b64fdce46210b0", kill_on_drop: false }`
[INFO] [stdout] b46fa9f2a0904387bf1da064e3f0761facbefbe61cc3f60d10b64fdce46210b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 8121fc36e208b53b5dcabf3856459f0e500a395d916d12d1a1ae8cecf7f7e86f
[INFO] running `Command { std: "docker" "start" "-a" "8121fc36e208b53b5dcabf3856459f0e500a395d916d12d1a1ae8cecf7f7e86f", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]    Compiling slog-async v2.8.0
[INFO] [stderr]     Checking astral-util v0.0.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Checking astral-error v0.0.5
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking astral-math v0.0.3
[INFO] [stderr]     Checking is-terminal v0.4.12
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]    Compiling time-macros v0.2.17
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking time v0.3.34
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking slog-term v2.9.1
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking astral-thirdparty v0.0.2
[INFO] [stderr]     Checking astral-string v0.0.5
[INFO] [stderr]     Checking astral-engine v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.55s
[INFO] running `Command { std: "docker" "inspect" "8121fc36e208b53b5dcabf3856459f0e500a395d916d12d1a1ae8cecf7f7e86f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8121fc36e208b53b5dcabf3856459f0e500a395d916d12d1a1ae8cecf7f7e86f", kill_on_drop: false }`
[INFO] [stdout] 8121fc36e208b53b5dcabf3856459f0e500a395d916d12d1a1ae8cecf7f7e86f