[INFO] fetching crate ltxcut 0.1.1...
[INFO] checking ltxcut-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate ltxcut 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate ltxcut 0.1.1 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 ltxcut 0.1.1
[INFO] finished tweaking crates.io crate ltxcut 0.1.1
[INFO] tweaked toml for crates.io crate ltxcut 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate ltxcut 0.1.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded string-builder v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 0c760b9b33f0ba56afa1aeab463601eaf3b5bcbf67cacdabf1e26ebeebc26567
[INFO] running `Command { std: "docker" "start" "-a" "0c760b9b33f0ba56afa1aeab463601eaf3b5bcbf67cacdabf1e26ebeebc26567", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c760b9b33f0ba56afa1aeab463601eaf3b5bcbf67cacdabf1e26ebeebc26567", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c760b9b33f0ba56afa1aeab463601eaf3b5bcbf67cacdabf1e26ebeebc26567", kill_on_drop: false }`
[INFO] [stdout] 0c760b9b33f0ba56afa1aeab463601eaf3b5bcbf67cacdabf1e26ebeebc26567
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8100e893bc21eeb3780860840c440a11330add66c61c56b9440026cb80b56461
[INFO] running `Command { std: "docker" "start" "-a" "8100e893bc21eeb3780860840c440a11330add66c61c56b9440026cb80b56461", kill_on_drop: false }`
[INFO] [stderr]     Checking string-builder v0.2.0
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking ltxcut v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "8100e893bc21eeb3780860840c440a11330add66c61c56b9440026cb80b56461", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8100e893bc21eeb3780860840c440a11330add66c61c56b9440026cb80b56461", kill_on_drop: false }`
[INFO] [stdout] 8100e893bc21eeb3780860840c440a11330add66c61c56b9440026cb80b56461
[INFO] checking ltxcut-0.1.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate ltxcut 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate ltxcut 0.1.1 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 ltxcut 0.1.1
[INFO] finished tweaking crates.io crate ltxcut 0.1.1
[INFO] tweaked toml for crates.io crate ltxcut 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate ltxcut 0.1.1 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e1d4e74a6fbb222c4ce99d0a2de10288a4e2d1d7e5943b7dece8f347d3bd0144
[INFO] running `Command { std: "docker" "start" "-a" "e1d4e74a6fbb222c4ce99d0a2de10288a4e2d1d7e5943b7dece8f347d3bd0144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1d4e74a6fbb222c4ce99d0a2de10288a4e2d1d7e5943b7dece8f347d3bd0144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1d4e74a6fbb222c4ce99d0a2de10288a4e2d1d7e5943b7dece8f347d3bd0144", kill_on_drop: false }`
[INFO] [stdout] e1d4e74a6fbb222c4ce99d0a2de10288a4e2d1d7e5943b7dece8f347d3bd0144
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 28f0405e94be9d0c2af1eb173807455be88839ac42da47aa1fdf540f08f4f388
[INFO] running `Command { std: "docker" "start" "-a" "28f0405e94be9d0c2af1eb173807455be88839ac42da47aa1fdf540f08f4f388", kill_on_drop: false }`
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking string-builder v0.2.0
[INFO] [stderr]     Checking ltxcut v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "28f0405e94be9d0c2af1eb173807455be88839ac42da47aa1fdf540f08f4f388", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f0405e94be9d0c2af1eb173807455be88839ac42da47aa1fdf540f08f4f388", kill_on_drop: false }`
[INFO] [stdout] 28f0405e94be9d0c2af1eb173807455be88839ac42da47aa1fdf540f08f4f388