[INFO] fetching crate zoet 0.1.14...
[INFO] checking zoet-0.1.14 against try#0edd13c68435d50367c79cef43ac2768d2ec4f3d for pr-129422
[INFO] extracting crate zoet 0.1.14 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate zoet 0.1.14 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 zoet 0.1.14
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate zoet 0.1.14
[INFO] tweaked toml for crates.io crate zoet 0.1.14 written to /workspace/builds/worker-3-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 9 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d0fe0b07062f6691cbf7a68ba692339762d745c906245ed8db7cb9dff3e44ea6
[INFO] running `Command { std: "docker" "start" "-a" "d0fe0b07062f6691cbf7a68ba692339762d745c906245ed8db7cb9dff3e44ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0fe0b07062f6691cbf7a68ba692339762d745c906245ed8db7cb9dff3e44ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0fe0b07062f6691cbf7a68ba692339762d745c906245ed8db7cb9dff3e44ea6", kill_on_drop: false }`
[INFO] [stdout] d0fe0b07062f6691cbf7a68ba692339762d745c906245ed8db7cb9dff3e44ea6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ccff41aecbbb2a7da3d99b43c07d970cd60049cfba088dbbe06f3264f229b50f
[INFO] running `Command { std: "docker" "start" "-a" "ccff41aecbbb2a7da3d99b43c07d970cd60049cfba088dbbe06f3264f229b50f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling zoet-macro v0.1.14
[INFO] [stderr]     Checking zoet v0.1.14 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]  --> tests/copy_attrs.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Foo(usize);
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Foo` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `unix_foo` is never used
[INFO] [stdout]   --> tests/copy_attrs.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 8  | impl Foo {
[INFO] [stdout]    | -------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn unix_foo() -> Foo {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unix_bar` is never used
[INFO] [stdout]   --> tests/copy_attrs.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn unix_bar(foo: &Foo) -> &usize {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `len_default` is never used
[INFO] [stdout]   --> tests/generics.rs:36:4
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn len_default<I: Default>() -> Length<I> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 8.73s
[INFO] running `Command { std: "docker" "inspect" "ccff41aecbbb2a7da3d99b43c07d970cd60049cfba088dbbe06f3264f229b50f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccff41aecbbb2a7da3d99b43c07d970cd60049cfba088dbbe06f3264f229b50f", kill_on_drop: false }`
[INFO] [stdout] ccff41aecbbb2a7da3d99b43c07d970cd60049cfba088dbbe06f3264f229b50f