[INFO] fetching crate vamp 0.1.0...
[INFO] checking vamp-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate vamp 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate vamp 0.1.0 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 vamp 0.1.0
[INFO] finished tweaking crates.io crate vamp 0.1.0
[INFO] tweaked toml for crates.io crate vamp 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate vamp 0.1.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded console v0.15.2
[INFO] [stderr]   Downloaded proc-macro2 v1.0.47
[INFO] [stderr]   Downloaded anyhow v1.0.66
[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] 6a234cdaef76427dc5b6aafc7d6210fe722a21c1b32477a68cb6e8700a9f23f3
[INFO] running `Command { std: "docker" "start" "-a" "6a234cdaef76427dc5b6aafc7d6210fe722a21c1b32477a68cb6e8700a9f23f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a234cdaef76427dc5b6aafc7d6210fe722a21c1b32477a68cb6e8700a9f23f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a234cdaef76427dc5b6aafc7d6210fe722a21c1b32477a68cb6e8700a9f23f3", kill_on_drop: false }`
[INFO] [stdout] 6a234cdaef76427dc5b6aafc7d6210fe722a21c1b32477a68cb6e8700a9f23f3
[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] 300154fc3a6096b82e4baaab6961f23244f0d0296411b66a017c944401a195d5
[INFO] running `Command { std: "docker" "start" "-a" "300154fc3a6096b82e4baaab6961f23244f0d0296411b66a017c944401a195d5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking console v0.15.2
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking vamp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.69s
[INFO] running `Command { std: "docker" "inspect" "300154fc3a6096b82e4baaab6961f23244f0d0296411b66a017c944401a195d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "300154fc3a6096b82e4baaab6961f23244f0d0296411b66a017c944401a195d5", kill_on_drop: false }`
[INFO] [stdout] 300154fc3a6096b82e4baaab6961f23244f0d0296411b66a017c944401a195d5
[INFO] checking vamp-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate vamp 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate vamp 0.1.0 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 vamp 0.1.0
[INFO] finished tweaking crates.io crate vamp 0.1.0
[INFO] tweaked toml for crates.io crate vamp 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate vamp 0.1.0 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] 426be1dbd7e6ed9edce0324c334df3ac34f8558213a0ecb3df93a0818e4887da
[INFO] running `Command { std: "docker" "start" "-a" "426be1dbd7e6ed9edce0324c334df3ac34f8558213a0ecb3df93a0818e4887da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "426be1dbd7e6ed9edce0324c334df3ac34f8558213a0ecb3df93a0818e4887da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "426be1dbd7e6ed9edce0324c334df3ac34f8558213a0ecb3df93a0818e4887da", kill_on_drop: false }`
[INFO] [stdout] 426be1dbd7e6ed9edce0324c334df3ac34f8558213a0ecb3df93a0818e4887da
[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] 4eae86cb8ea90e2b74b395772a9354bdf3f03cc2771ee527182103b5008c9524
[INFO] running `Command { std: "docker" "start" "-a" "4eae86cb8ea90e2b74b395772a9354bdf3f03cc2771ee527182103b5008c9524", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling anyhow v1.0.66
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking console v0.15.2
[INFO] [stderr]     Checking regex v1.7.0
[INFO] [stderr]     Checking vamp v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `Command { std: "docker" "inspect" "4eae86cb8ea90e2b74b395772a9354bdf3f03cc2771ee527182103b5008c9524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4eae86cb8ea90e2b74b395772a9354bdf3f03cc2771ee527182103b5008c9524", kill_on_drop: false }`
[INFO] [stdout] 4eae86cb8ea90e2b74b395772a9354bdf3f03cc2771ee527182103b5008c9524