[INFO] cloning repository https://github.com/Frost/pru
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Frost/pru" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrost%2Fpru", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrost%2Fpru'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2713e4971dba1e66989a111f86a401820c67be3d
[INFO] checking Frost/pru against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrost%2Fpru" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Frost/pru 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/Frost/pru
[INFO] finished tweaking git repo https://github.com/Frost/pru
[INFO] tweaked toml for git repo https://github.com/Frost/pru written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Frost/pru 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded execute-command-tokens v0.1.4
[INFO] [stderr]   Downloaded execute-command-macro v0.1.6
[INFO] [stderr]   Downloaded execute v0.2.9
[INFO] [stderr]   Downloaded execute-command-macro-impl v0.1.6
[INFO] [stderr]   Downloaded assert_cmd v1.0.7
[INFO] [stderr]   Downloaded clap_derive v3.0.0-rc.8
[INFO] [stderr]   Downloaded predicates v2.0.0
[INFO] [stderr]   Downloaded tui v0.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 309b8e1f08e7cfdbe56ead915f4f706ead331119943df5058c88a926fdda5057
[INFO] running `Command { std: "docker" "start" "-a" "309b8e1f08e7cfdbe56ead915f4f706ead331119943df5058c88a926fdda5057", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "309b8e1f08e7cfdbe56ead915f4f706ead331119943df5058c88a926fdda5057", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "309b8e1f08e7cfdbe56ead915f4f706ead331119943df5058c88a926fdda5057", kill_on_drop: false }`
[INFO] [stdout] 309b8e1f08e7cfdbe56ead915f4f706ead331119943df5058c88a926fdda5057
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 4e68cb9b159b985b8cc5fe26c1ebe1d61fc586950a4d979d97c3963395cef568
[INFO] running `Command { std: "docker" "start" "-a" "4e68cb9b159b985b8cc5fe26c1ebe1d61fc586950a4d979d97c3963395cef568", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling execute-command-tokens v0.1.4
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking tui v0.15.0
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking predicates v2.0.0
[INFO] [stderr]     Checking assert_cmd v1.0.7
[INFO] [stderr]    Compiling execute-command-macro-impl v0.1.6
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.8
[INFO] [stderr]     Checking execute-command-macro v0.1.6
[INFO] [stderr]     Checking execute v0.2.9
[INFO] [stderr]     Checking clap v3.0.0-rc.8
[INFO] [stderr]     Checking pru v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.12s
[INFO] running `Command { std: "docker" "inspect" "4e68cb9b159b985b8cc5fe26c1ebe1d61fc586950a4d979d97c3963395cef568", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e68cb9b159b985b8cc5fe26c1ebe1d61fc586950a4d979d97c3963395cef568", kill_on_drop: false }`
[INFO] [stdout] 4e68cb9b159b985b8cc5fe26c1ebe1d61fc586950a4d979d97c3963395cef568
[INFO] checking Frost/pru against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrost%2Fpru" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Frost/pru 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/Frost/pru
[INFO] finished tweaking git repo https://github.com/Frost/pru
[INFO] tweaked toml for git repo https://github.com/Frost/pru written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Frost/pru 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] a31b125cf36b83c0f11e3db4ba9834023cc05d297a5bbe9fe914abe72f117bd3
[INFO] running `Command { std: "docker" "start" "-a" "a31b125cf36b83c0f11e3db4ba9834023cc05d297a5bbe9fe914abe72f117bd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a31b125cf36b83c0f11e3db4ba9834023cc05d297a5bbe9fe914abe72f117bd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a31b125cf36b83c0f11e3db4ba9834023cc05d297a5bbe9fe914abe72f117bd3", kill_on_drop: false }`
[INFO] [stdout] a31b125cf36b83c0f11e3db4ba9834023cc05d297a5bbe9fe914abe72f117bd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 79056097ae5e491fd8b7e4ac1a2d72d42851957f043718857026169811804da5
[INFO] running `Command { std: "docker" "start" "-a" "79056097ae5e491fd8b7e4ac1a2d72d42851957f043718857026169811804da5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling execute-command-tokens v0.1.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking crossterm v0.19.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking tui v0.15.0
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking predicates v2.0.0
[INFO] [stderr]     Checking assert_cmd v1.0.7
[INFO] [stderr]    Compiling execute-command-macro-impl v0.1.6
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.8
[INFO] [stderr]     Checking execute-command-macro v0.1.6
[INFO] [stderr]     Checking execute v0.2.9
[INFO] [stderr]     Checking clap v3.0.0-rc.8
[INFO] [stderr]     Checking pru v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.55s
[INFO] running `Command { std: "docker" "inspect" "79056097ae5e491fd8b7e4ac1a2d72d42851957f043718857026169811804da5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79056097ae5e491fd8b7e4ac1a2d72d42851957f043718857026169811804da5", kill_on_drop: false }`
[INFO] [stdout] 79056097ae5e491fd8b7e4ac1a2d72d42851957f043718857026169811804da5