[INFO] fetching crate ansi-diff 1.1.0...
[INFO] checking ansi-diff-1.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate ansi-diff 1.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate ansi-diff 1.1.0 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 ansi-diff 1.1.0
[INFO] finished tweaking crates.io crate ansi-diff 1.1.0
[INFO] tweaked toml for crates.io crate ansi-diff 1.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate ansi-diff 1.1.0 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded term_size v0.3.2
[INFO] [stderr]   Downloaded signal-hook v0.3.13
[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] 3a71be467f7878be177bc9b513ae187584bf4dea68420f69942e587ed3e9484a
[INFO] running `Command { std: "docker" "start" "-a" "3a71be467f7878be177bc9b513ae187584bf4dea68420f69942e587ed3e9484a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a71be467f7878be177bc9b513ae187584bf4dea68420f69942e587ed3e9484a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a71be467f7878be177bc9b513ae187584bf4dea68420f69942e587ed3e9484a", kill_on_drop: false }`
[INFO] [stdout] 3a71be467f7878be177bc9b513ae187584bf4dea68420f69942e587ed3e9484a
[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] c323da7b888d299497fff164b13574d1699664bfce6853ed4e78fc0ab8d48cd8
[INFO] running `Command { std: "docker" "start" "-a" "c323da7b888d299497fff164b13574d1699664bfce6853ed4e78fc0ab8d48cd8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking ansi-diff v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "c323da7b888d299497fff164b13574d1699664bfce6853ed4e78fc0ab8d48cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c323da7b888d299497fff164b13574d1699664bfce6853ed4e78fc0ab8d48cd8", kill_on_drop: false }`
[INFO] [stdout] c323da7b888d299497fff164b13574d1699664bfce6853ed4e78fc0ab8d48cd8
[INFO] checking ansi-diff-1.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate ansi-diff 1.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate ansi-diff 1.1.0 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 ansi-diff 1.1.0
[INFO] finished tweaking crates.io crate ansi-diff 1.1.0
[INFO] tweaked toml for crates.io crate ansi-diff 1.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate ansi-diff 1.1.0 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-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] 2bb7685bbb65dbd30588bb8443ca1b10ce480137771c6db1f69561eb9d12db1f
[INFO] running `Command { std: "docker" "start" "-a" "2bb7685bbb65dbd30588bb8443ca1b10ce480137771c6db1f69561eb9d12db1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bb7685bbb65dbd30588bb8443ca1b10ce480137771c6db1f69561eb9d12db1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bb7685bbb65dbd30588bb8443ca1b10ce480137771c6db1f69561eb9d12db1f", kill_on_drop: false }`
[INFO] [stdout] 2bb7685bbb65dbd30588bb8443ca1b10ce480137771c6db1f69561eb9d12db1f
[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] b977535e71d3ee403c95d77bd252fa6cf00517c3a5da63013aef8f60716acff8
[INFO] running `Command { std: "docker" "start" "-a" "b977535e71d3ee403c95d77bd252fa6cf00517c3a5da63013aef8f60716acff8", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking ansi-diff v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "b977535e71d3ee403c95d77bd252fa6cf00517c3a5da63013aef8f60716acff8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b977535e71d3ee403c95d77bd252fa6cf00517c3a5da63013aef8f60716acff8", kill_on_drop: false }`
[INFO] [stdout] b977535e71d3ee403c95d77bd252fa6cf00517c3a5da63013aef8f60716acff8