[INFO] fetching crate cppvtbl 0.2.1...
[INFO] checking cppvtbl-0.2.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate cppvtbl 0.2.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate cppvtbl 0.2.1
[INFO] finished tweaking crates.io crate cppvtbl 0.2.1
[INFO] tweaked toml for crates.io crate cppvtbl 0.2.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cppvtbl 0.2.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 018406e091be4a35c6d0ba6033802e6d986d1e29c8af6a0b870323f1e73d3deb
[INFO] running `Command { std: "docker" "start" "-a" "018406e091be4a35c6d0ba6033802e6d986d1e29c8af6a0b870323f1e73d3deb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "018406e091be4a35c6d0ba6033802e6d986d1e29c8af6a0b870323f1e73d3deb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "018406e091be4a35c6d0ba6033802e6d986d1e29c8af6a0b870323f1e73d3deb", kill_on_drop: false }`
[INFO] [stdout] 018406e091be4a35c6d0ba6033802e6d986d1e29c8af6a0b870323f1e73d3deb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 490415430d0e885861a8da9f9e3fd770f512801db0e98bbc1fdd975bbbe13ac8
[INFO] running `Command { std: "docker" "start" "-a" "490415430d0e885861a8da9f9e3fd770f512801db0e98bbc1fdd975bbbe13ac8", kill_on_drop: false }`
[INFO] [stderr]    Compiling cppvtbl-macros v0.2.1
[INFO] [stderr]     Checking cppvtbl v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Test` is never used
[INFO] [stdout]  --> tests/generics.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | trait Test {
[INFO] [stdout]   |       ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WrapperRef` is never constructed
[INFO] [stdout]  --> tests/generics.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct WrapperRef<'p>(&'p u32);
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TestVtableForWrapperRef` is never used
[INFO] [stdout]  --> tests/generics.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[impl_vtables(Test)]
[INFO] [stdout]   |                ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this warning originates in the macro `unsafe_impl_TestVtable` which comes from the expansion of the attribute macro `impl_vtables` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sub` is never constructed
[INFO] [stdout]   --> tests/basic.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct Sub(u8);
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OperatorVtableForSub` is never used
[INFO] [stdout]   --> tests/basic.rs:17:16
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[impl_vtables(Operator)]
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `unsafe_impl_OperatorVtable` which comes from the expansion of the attribute macro `impl_vtables` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "490415430d0e885861a8da9f9e3fd770f512801db0e98bbc1fdd975bbbe13ac8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "490415430d0e885861a8da9f9e3fd770f512801db0e98bbc1fdd975bbbe13ac8", kill_on_drop: false }`
[INFO] [stdout] 490415430d0e885861a8da9f9e3fd770f512801db0e98bbc1fdd975bbbe13ac8