[INFO] cloning repository https://github.com/colin-heffernan/reflex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/colin-heffernan/reflex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolin-heffernan%2Freflex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolin-heffernan%2Freflex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2d44c18bd5bc17addbc6d382be3581ad1ab0a7b
[INFO] checking colin-heffernan/reflex against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolin-heffernan%2Freflex" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/colin-heffernan/reflex 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 git repo https://github.com/colin-heffernan/reflex
[INFO] finished tweaking git repo https://github.com/colin-heffernan/reflex
[INFO] tweaked toml for git repo https://github.com/colin-heffernan/reflex written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/colin-heffernan/reflex 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 str_indices v0.4.3
[INFO] [stderr]   Downloaded ropey v1.6.1
[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] b5265f05f866531cb042f0a2c6eed158db9ec844988f3d5eebacaafd72c691fe
[INFO] running `Command { std: "docker" "start" "-a" "b5265f05f866531cb042f0a2c6eed158db9ec844988f3d5eebacaafd72c691fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5265f05f866531cb042f0a2c6eed158db9ec844988f3d5eebacaafd72c691fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5265f05f866531cb042f0a2c6eed158db9ec844988f3d5eebacaafd72c691fe", kill_on_drop: false }`
[INFO] [stdout] b5265f05f866531cb042f0a2c6eed158db9ec844988f3d5eebacaafd72c691fe
[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] f3e7eb2aecd1125458580b0e5be37e163481f4851eee6fbf1da04c7579590e0a
[INFO] running `Command { std: "docker" "start" "-a" "f3e7eb2aecd1125458580b0e5be37e163481f4851eee6fbf1da04c7579590e0a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]     Checking str_indices v0.4.3
[INFO] [stderr]     Checking ropey v1.6.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking signal-hook v0.3.17
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.27.0
[INFO] [stderr]     Checking reflex-editor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.44s
[INFO] running `Command { std: "docker" "inspect" "f3e7eb2aecd1125458580b0e5be37e163481f4851eee6fbf1da04c7579590e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3e7eb2aecd1125458580b0e5be37e163481f4851eee6fbf1da04c7579590e0a", kill_on_drop: false }`
[INFO] [stdout] f3e7eb2aecd1125458580b0e5be37e163481f4851eee6fbf1da04c7579590e0a
[INFO] checking colin-heffernan/reflex against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcolin-heffernan%2Freflex" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/colin-heffernan/reflex 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 git repo https://github.com/colin-heffernan/reflex
[INFO] finished tweaking git repo https://github.com/colin-heffernan/reflex
[INFO] tweaked toml for git repo https://github.com/colin-heffernan/reflex written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/colin-heffernan/reflex 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] 074058c4ed81743f005fc8d16787481f8c7ba23d99f50e4b1c7d8f0a73398d9a
[INFO] running `Command { std: "docker" "start" "-a" "074058c4ed81743f005fc8d16787481f8c7ba23d99f50e4b1c7d8f0a73398d9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "074058c4ed81743f005fc8d16787481f8c7ba23d99f50e4b1c7d8f0a73398d9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "074058c4ed81743f005fc8d16787481f8c7ba23d99f50e4b1c7d8f0a73398d9a", kill_on_drop: false }`
[INFO] [stdout] 074058c4ed81743f005fc8d16787481f8c7ba23d99f50e4b1c7d8f0a73398d9a
[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] 7c7c52bb0c97e80a3deb78e47f6227ee2286ea0e8d93858e659551f5d3400d6a
[INFO] running `Command { std: "docker" "start" "-a" "7c7c52bb0c97e80a3deb78e47f6227ee2286ea0e8d93858e659551f5d3400d6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.152
[INFO] [stderr]     Checking str_indices v0.4.3
[INFO] [stderr]     Checking ropey v1.6.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking signal-hook v0.3.17
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossterm v0.27.0
[INFO] [stderr]     Checking reflex-editor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.90s
[INFO] running `Command { std: "docker" "inspect" "7c7c52bb0c97e80a3deb78e47f6227ee2286ea0e8d93858e659551f5d3400d6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c7c52bb0c97e80a3deb78e47f6227ee2286ea0e8d93858e659551f5d3400d6a", kill_on_drop: false }`
[INFO] [stdout] 7c7c52bb0c97e80a3deb78e47f6227ee2286ea0e8d93858e659551f5d3400d6a