[INFO] fetching crate frunk_core 0.4.2...
[INFO] checking frunk_core-0.4.2 against try#0edd13c68435d50367c79cef43ac2768d2ec4f3d for pr-129422
[INFO] extracting crate frunk_core 0.4.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate frunk_core 0.4.2 on toolchain 0edd13c68435d50367c79cef43ac2768d2ec4f3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate frunk_core 0.4.2
[INFO] finished tweaking crates.io crate frunk_core 0.4.2
[INFO] tweaked toml for crates.io crate frunk_core 0.4.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aa29ca07db9e8e7a1ba03d3f9bd23cde437a4d9cc3f1761f676f43b5c52acd2f
[INFO] running `Command { std: "docker" "start" "-a" "aa29ca07db9e8e7a1ba03d3f9bd23cde437a4d9cc3f1761f676f43b5c52acd2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa29ca07db9e8e7a1ba03d3f9bd23cde437a4d9cc3f1761f676f43b5c52acd2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa29ca07db9e8e7a1ba03d3f9bd23cde437a4d9cc3f1761f676f43b5c52acd2f", kill_on_drop: false }`
[INFO] [stdout] aa29ca07db9e8e7a1ba03d3f9bd23cde437a4d9cc3f1761f676f43b5c52acd2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae93b65c4cffaf3993feed5f7adfb8c9bf5d31b4effdf29d63e7ea45e1a4e5eb
[INFO] running `Command { std: "docker" "start" "-a" "ae93b65c4cffaf3993feed5f7adfb8c9bf5d31b4effdf29d63e7ea45e1a4e5eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling frunk_core v0.4.3
[INFO] [stderr]     Checking frunk_core v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/coproduct.rs:682:13
[INFO] [stdout]     |
[INFO] [stdout] 682 |             Coproduct::Inr(never) => match never {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^ matches no values because `CNil` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling frunk_proc_macro_helpers v0.1.3
[INFO] [stderr]    Compiling frunk_derives v0.4.3
[INFO] [stderr]    Compiling frunk_proc_macros v0.1.3
[INFO] [stderr]     Checking frunk v0.4.3
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/coproduct.rs:682:13
[INFO] [stdout]     |
[INFO] [stdout] 682 |             Coproduct::Inr(never) => match never {},
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^ matches no values because `coproduct::CNil` is uninhabited
[INFO] [stdout]     |
[INFO] [stdout]     = note: to learn more about uninhabited types, see https://doc.rust-lang.org/nomicon/exotic-sizes.html#empty-types
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.08s
[INFO] running `Command { std: "docker" "inspect" "ae93b65c4cffaf3993feed5f7adfb8c9bf5d31b4effdf29d63e7ea45e1a4e5eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae93b65c4cffaf3993feed5f7adfb8c9bf5d31b4effdf29d63e7ea45e1a4e5eb", kill_on_drop: false }`
[INFO] [stdout] ae93b65c4cffaf3993feed5f7adfb8c9bf5d31b4effdf29d63e7ea45e1a4e5eb