[INFO] cloning repository https://github.com/somehowchris/rust-crates-index-metrics
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/somehowchris/rust-crates-index-metrics" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsomehowchris%2Frust-crates-index-metrics", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsomehowchris%2Frust-crates-index-metrics'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01cc7fd3ce78851d3098e30b6b5693483dde67e3
[INFO] checking somehowchris/rust-crates-index-metrics against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsomehowchris%2Frust-crates-index-metrics" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/somehowchris/rust-crates-index-metrics 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] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/somehowchris/rust-crates-index-metrics
[INFO] finished tweaking git repo https://github.com/somehowchris/rust-crates-index-metrics
[INFO] tweaked toml for git repo https://github.com/somehowchris/rust-crates-index-metrics written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 248 packages
[INFO] [stderr]       Adding async-channel v1.9.0 (latest: v2.2.0)
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[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 cargo_toml v0.19.2
[INFO] [stderr]   Downloaded crates-index v1.0.0
[INFO] [stderr]   Downloaded async-tar v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 0f5db742bff1c6bab31849c37b2f091a9c8a8b99f0f8a6f5d6ccfd25de80d64b
[INFO] running `Command { std: "docker" "start" "-a" "0f5db742bff1c6bab31849c37b2f091a9c8a8b99f0f8a6f5d6ccfd25de80d64b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f5db742bff1c6bab31849c37b2f091a9c8a8b99f0f8a6f5d6ccfd25de80d64b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f5db742bff1c6bab31849c37b2f091a9c8a8b99f0f8a6f5d6ccfd25de80d64b", kill_on_drop: false }`
[INFO] [stdout] 0f5db742bff1c6bab31849c37b2f091a9c8a8b99f0f8a6f5d6ccfd25de80d64b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6b09ae5507702cb6fac8761452c60bd1c60cb46bcddf5780f7fd05d9fb3e3e2a
[INFO] running `Command { std: "docker" "start" "-a" "6b09ae5507702cb6fac8761452c60bd1c60cb46bcddf5780f7fd05d9fb3e3e2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
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[INFO] [stderr]     Checking rust-crates-index-metrics v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 48.73s
[INFO] running `Command { std: "docker" "inspect" "6b09ae5507702cb6fac8761452c60bd1c60cb46bcddf5780f7fd05d9fb3e3e2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b09ae5507702cb6fac8761452c60bd1c60cb46bcddf5780f7fd05d9fb3e3e2a", kill_on_drop: false }`
[INFO] [stdout] 6b09ae5507702cb6fac8761452c60bd1c60cb46bcddf5780f7fd05d9fb3e3e2a
[INFO] checking somehowchris/rust-crates-index-metrics against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsomehowchris%2Frust-crates-index-metrics" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/somehowchris/rust-crates-index-metrics 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] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/somehowchris/rust-crates-index-metrics
[INFO] finished tweaking git repo https://github.com/somehowchris/rust-crates-index-metrics
[INFO] tweaked toml for git repo https://github.com/somehowchris/rust-crates-index-metrics written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 248 packages
[INFO] [stderr]       Adding async-channel v1.9.0 (latest: v2.2.0)
[INFO] [stderr]       Adding async-io v1.13.0 (latest: v2.3.2)
[INFO] [stderr]       Adding async-lock v2.8.0 (latest: v3.3.0)
[INFO] [stderr]       Adding base64 v0.21.7 (latest: v0.22.0)
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[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e4dec5f8fc33fe9b260fa085cec3e326be7f7f3d2383b9b222cfc579e11e5a75
[INFO] running `Command { std: "docker" "start" "-a" "e4dec5f8fc33fe9b260fa085cec3e326be7f7f3d2383b9b222cfc579e11e5a75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4dec5f8fc33fe9b260fa085cec3e326be7f7f3d2383b9b222cfc579e11e5a75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4dec5f8fc33fe9b260fa085cec3e326be7f7f3d2383b9b222cfc579e11e5a75", kill_on_drop: false }`
[INFO] [stdout] e4dec5f8fc33fe9b260fa085cec3e326be7f7f3d2383b9b222cfc579e11e5a75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 4e21f19ba9e02a3e5d885d7139dd874d3dd487e9b48cfe50bad93113d1fd5604
[INFO] running `Command { std: "docker" "start" "-a" "4e21f19ba9e02a3e5d885d7139dd874d3dd487e9b48cfe50bad93113d1fd5604", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
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[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] running `Command { std: "docker" "inspect" "4e21f19ba9e02a3e5d885d7139dd874d3dd487e9b48cfe50bad93113d1fd5604", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e21f19ba9e02a3e5d885d7139dd874d3dd487e9b48cfe50bad93113d1fd5604", kill_on_drop: false }`
[INFO] [stdout] 4e21f19ba9e02a3e5d885d7139dd874d3dd487e9b48cfe50bad93113d1fd5604