[INFO] fetching crate powerset-enum-attr 0.1.0...
[INFO] checking powerset-enum-attr-0.1.0 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate powerset-enum-attr 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate powerset-enum-attr 0.1.0 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate powerset-enum-attr 0.1.0
[INFO] finished tweaking crates.io crate powerset-enum-attr 0.1.0
[INFO] tweaked toml for crates.io crate powerset-enum-attr 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.86)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.37)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.77)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4b1714ac3d69054e246e0a53a77e6bb86e395b0e3e9b942f375900d1afa5a1e
[INFO] running `Command { std: "docker" "start" "-a" "f4b1714ac3d69054e246e0a53a77e6bb86e395b0e3e9b942f375900d1afa5a1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4b1714ac3d69054e246e0a53a77e6bb86e395b0e3e9b942f375900d1afa5a1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4b1714ac3d69054e246e0a53a77e6bb86e395b0e3e9b942f375900d1afa5a1e", kill_on_drop: false }`
[INFO] [stdout] f4b1714ac3d69054e246e0a53a77e6bb86e395b0e3e9b942f375900d1afa5a1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d57b1b02e63f2c4d30a8c1e01db97737b7f5bac2be318c366f35d8350c8b413b
[INFO] running `Command { std: "docker" "start" "-a" "d57b1b02e63f2c4d30a8c1e01db97737b7f5bac2be318c366f35d8350c8b413b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking powerset-enum-attr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `comma` is never read
[INFO] [stdout]  --> src/powerset_macro_impl.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct PowersetMacroInput {
[INFO] [stdout]   |            ------------------ field in this struct
[INFO] [stdout] 8 |     empty_powerset: syn::Type,
[INFO] [stdout] 9 |     comma: Option<syn::token::Comma>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PowersetMacroInput` has a derived impl for the trait `Debug`, 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `comma` is never read
[INFO] [stdout]  --> src/powerset_macro_impl.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct PowersetMacroInput {
[INFO] [stdout]   |            ------------------ field in this struct
[INFO] [stdout] 8 |     empty_powerset: syn::Type,
[INFO] [stdout] 9 |     comma: Option<syn::token::Comma>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PowersetMacroInput` has a derived impl for the trait `Debug`, 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.85s
[INFO] running `Command { std: "docker" "inspect" "d57b1b02e63f2c4d30a8c1e01db97737b7f5bac2be318c366f35d8350c8b413b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d57b1b02e63f2c4d30a8c1e01db97737b7f5bac2be318c366f35d8350c8b413b", kill_on_drop: false }`
[INFO] [stdout] d57b1b02e63f2c4d30a8c1e01db97737b7f5bac2be318c366f35d8350c8b413b
[INFO] checking powerset-enum-attr-0.1.0 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate powerset-enum-attr 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate powerset-enum-attr 0.1.0 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate powerset-enum-attr 0.1.0
[INFO] finished tweaking crates.io crate powerset-enum-attr 0.1.0
[INFO] tweaked toml for crates.io crate powerset-enum-attr 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "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] [stderr]       Adding proc-macro2 v0.4.30 (latest: v1.0.86)
[INFO] [stderr]       Adding quote v0.6.13 (latest: v1.0.37)
[INFO] [stderr]       Adding syn v0.15.44 (latest: v2.0.77)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (latest: v0.2.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de2edcb525564d7361cc47020ef262fc66506a59d2a6532c6acdfcb2cf80c2f3
[INFO] running `Command { std: "docker" "start" "-a" "de2edcb525564d7361cc47020ef262fc66506a59d2a6532c6acdfcb2cf80c2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de2edcb525564d7361cc47020ef262fc66506a59d2a6532c6acdfcb2cf80c2f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de2edcb525564d7361cc47020ef262fc66506a59d2a6532c6acdfcb2cf80c2f3", kill_on_drop: false }`
[INFO] [stdout] de2edcb525564d7361cc47020ef262fc66506a59d2a6532c6acdfcb2cf80c2f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5cb835282e415430010ba0c2a87090079a5228f7618487259bbbfee3c039b51
[INFO] running `Command { std: "docker" "start" "-a" "c5cb835282e415430010ba0c2a87090079a5228f7618487259bbbfee3c039b51", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking powerset-enum-attr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `comma` is never read
[INFO] [stdout]  --> src/powerset_macro_impl.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct PowersetMacroInput {
[INFO] [stdout]   |            ------------------ field in this struct
[INFO] [stdout] 8 |     empty_powerset: syn::Type,
[INFO] [stdout] 9 |     comma: Option<syn::token::Comma>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PowersetMacroInput` has a derived impl for the trait `Debug`, 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: field `comma` is never read
[INFO] [stdout]  --> src/powerset_macro_impl.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct PowersetMacroInput {
[INFO] [stdout]   |            ------------------ field in this struct
[INFO] [stdout] 8 |     empty_powerset: syn::Type,
[INFO] [stdout] 9 |     comma: Option<syn::token::Comma>,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `PowersetMacroInput` has a derived impl for the trait `Debug`, 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.59s
[INFO] running `Command { std: "docker" "inspect" "c5cb835282e415430010ba0c2a87090079a5228f7618487259bbbfee3c039b51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5cb835282e415430010ba0c2a87090079a5228f7618487259bbbfee3c039b51", kill_on_drop: false }`
[INFO] [stdout] c5cb835282e415430010ba0c2a87090079a5228f7618487259bbbfee3c039b51