[INFO] fetching crate vtable 0.1.11...
[INFO] checking vtable-0.1.11 against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] extracting crate vtable 0.1.11 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate vtable 0.1.11 on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate vtable 0.1.11
[INFO] finished tweaking crates.io crate vtable 0.1.11
[INFO] tweaked toml for crates.io crate vtable 0.1.11 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 897c0a97cbbf06efb449799881aceabf6d0e53f527e300e1854c9569bf049a70
[INFO] running `Command { std: "docker" "start" "-a" "897c0a97cbbf06efb449799881aceabf6d0e53f527e300e1854c9569bf049a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "897c0a97cbbf06efb449799881aceabf6d0e53f527e300e1854c9569bf049a70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "897c0a97cbbf06efb449799881aceabf6d0e53f527e300e1854c9569bf049a70", kill_on_drop: false }`
[INFO] [stdout] 897c0a97cbbf06efb449799881aceabf6d0e53f527e300e1854c9569bf049a70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42a3fc78f88012ed618067c515819485dc90d5604a6c7608e936c5a9cfc2e537
[INFO] running `Command { std: "docker" "start" "-a" "42a3fc78f88012ed618067c515819485dc90d5604a6c7608e936c5a9cfc2e537", kill_on_drop: false }`
[INFO] [stderr]    Compiling field-offset v0.3.6
[INFO] [stderr]    Compiling portable-atomic v1.6.0
[INFO] [stderr]    Compiling const-field-offset-macro v0.1.3
[INFO] [stderr]    Compiling vtable-macro v0.1.10
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking const-field-offset v0.1.3
[INFO] [stderr]     Checking vtable v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]   --> tests/test_vrc.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | #[derive(Debug, const_field_offset::FieldOffsets)]
[INFO] [stdout]    |                 -------------------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     e: u8,
[INFO] [stdout]    |        ^^
[INFO] [stdout] 20 |     x: String,
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 21 |     foo: Rc<String>,
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 19 ~     e: (),
[INFO] [stdout] 20 ~     x: (),
[INFO] [stdout] 21 ~     foo: (),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]    --> tests/test_vrc.rs:159:11
[INFO] [stdout]     |
[INFO] [stdout] 155 | #[derive(Debug, const_field_offset::FieldOffsets)]
[INFO] [stdout]     |                 -------------------------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 159 |     some: SomeStruct,
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout] 160 |     another_struct: SomeStruct,
[INFO] [stdout]     |                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]     |
[INFO] [stdout] 159 ~     some: (),
[INFO] [stdout] 160 ~     another_struct: (),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "42a3fc78f88012ed618067c515819485dc90d5604a6c7608e936c5a9cfc2e537", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42a3fc78f88012ed618067c515819485dc90d5604a6c7608e936c5a9cfc2e537", kill_on_drop: false }`
[INFO] [stdout] 42a3fc78f88012ed618067c515819485dc90d5604a6c7608e936c5a9cfc2e537