[INFO] fetching crate variant_counter 0.4.0...
[INFO] building variant_counter-0.4.0 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1
[INFO] extracting crate variant_counter 0.4.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate variant_counter 0.4.0
[INFO] finished tweaking crates.io crate variant_counter 0.4.0
[INFO] tweaked toml for crates.io crate variant_counter 0.4.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate variant_counter 0.4.0 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate variant_counter 0.4.0 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded variant_counter_derived v0.4.0
[INFO] [stderr]   Downloaded proc-macro2 v1.0.28
[INFO] [stderr]   Downloaded syn v1.0.74
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f73d5cb6e8443f12f5f6f08c44f0dbc4b6f055dc5bea3445aa3fa9fe5a6fdaa
[INFO] running `Command { std: "docker" "start" "-a" "7f73d5cb6e8443f12f5f6f08c44f0dbc4b6f055dc5bea3445aa3fa9fe5a6fdaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f73d5cb6e8443f12f5f6f08c44f0dbc4b6f055dc5bea3445aa3fa9fe5a6fdaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f73d5cb6e8443f12f5f6f08c44f0dbc4b6f055dc5bea3445aa3fa9fe5a6fdaa", kill_on_drop: false }`
[INFO] [stdout] 7f73d5cb6e8443f12f5f6f08c44f0dbc4b6f055dc5bea3445aa3fa9fe5a6fdaa
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 412af5daa7798e69cd42896dc3687781390763389b4755296577b2c213c6e04d
[INFO] running `Command { std: "docker" "start" "-a" "412af5daa7798e69cd42896dc3687781390763389b4755296577b2c213c6e04d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling variant_counter_derived v0.4.0
[INFO] [stderr]    Compiling variant_counter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.92s
[INFO] running `Command { std: "docker" "inspect" "412af5daa7798e69cd42896dc3687781390763389b4755296577b2c213c6e04d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "412af5daa7798e69cd42896dc3687781390763389b4755296577b2c213c6e04d", kill_on_drop: false }`
[INFO] [stdout] 412af5daa7798e69cd42896dc3687781390763389b4755296577b2c213c6e04d
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f0c23a0e6c7c0b7c26e76df6abe5ece61f8181f258bc26861221c43fb67739c
[INFO] running `Command { std: "docker" "start" "-a" "6f0c23a0e6c7c0b7c26e76df6abe5ece61f8181f258bc26861221c43fb67739c", kill_on_drop: false }`
[INFO] [stderr]    Compiling variant_counter v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]  --> examples/platform.rs:5:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[derive(VariantCount)]
[INFO] [stdout]   |          ------------ the lifetime is named here
[INFO] [stdout] 5 | enum Platform {
[INFO] [stdout]   |      ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]   |
[INFO] [stdout]   = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]   = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]   |
[INFO] [stdout] 5 | enum Platform<'a> {
[INFO] [stdout]   |              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "6f0c23a0e6c7c0b7c26e76df6abe5ece61f8181f258bc26861221c43fb67739c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f0c23a0e6c7c0b7c26e76df6abe5ece61f8181f258bc26861221c43fb67739c", kill_on_drop: false }`
[INFO] [stdout] 6f0c23a0e6c7c0b7c26e76df6abe5ece61f8181f258bc26861221c43fb67739c