[INFO] fetching crate format-macro 0.2.2...
[INFO] checking format-macro-0.2.2 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate format-macro 0.2.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate format-macro 0.2.2 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate format-macro 0.2.2
[INFO] finished tweaking crates.io crate format-macro 0.2.2
[INFO] tweaked toml for crates.io crate format-macro 0.2.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 268b0d4220b79acb76e7ef7f735475163688cfb03fd56d066c28bee96975e8cc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "268b0d4220b79acb76e7ef7f735475163688cfb03fd56d066c28bee96975e8cc"`
[INFO] [stderr]     Checking format-core v0.2.2
[INFO] [stderr]     Checking syn v1.0.17
[INFO] [stderr]     Checking format-macro v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `Named`
[INFO] [stderr]   --> src/lazy_format.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 | /     Named {
[INFO] [stderr] 93 | |         name: Ident,
[INFO] [stderr] 94 | |         eq_token: Token![=],
[INFO] [stderr] 95 | |         value: Expr,
[INFO] [stderr] 96 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Unnamed`
[INFO] [stderr]   --> src/lazy_format.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 | /     Unnamed {
[INFO] [stderr] 98 | |         value: Expr,
[INFO] [stderr] 99 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Named`
[INFO] [stderr]   --> src/lazy_format.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 | /     Named {
[INFO] [stderr] 93 | |         name: Ident,
[INFO] [stderr] 94 | |         eq_token: Token![=],
[INFO] [stderr] 95 | |         value: Expr,
[INFO] [stderr] 96 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Unnamed`
[INFO] [stderr]   --> src/lazy_format.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 97 | /     Unnamed {
[INFO] [stderr] 98 | |         value: Expr,
[INFO] [stderr] 99 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.02s
[INFO] running `"docker" "inspect" "268b0d4220b79acb76e7ef7f735475163688cfb03fd56d066c28bee96975e8cc"`
[INFO] running `"docker" "rm" "-f" "268b0d4220b79acb76e7ef7f735475163688cfb03fd56d066c28bee96975e8cc"`
[INFO] [stdout] 268b0d4220b79acb76e7ef7f735475163688cfb03fd56d066c28bee96975e8cc