[INFO] fetching crate helper_fn 0.1.0...
[INFO] checking helper_fn-0.1.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate helper_fn 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate helper_fn 0.1.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate helper_fn 0.1.0
[INFO] finished tweaking crates.io crate helper_fn 0.1.0
[INFO] tweaked toml for crates.io crate helper_fn 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ef29656420d96c8bdbb92913b34e26176553835956fcc7f564e4e346d09b33ce
[INFO] running `Command { std: "docker" "start" "-a" "ef29656420d96c8bdbb92913b34e26176553835956fcc7f564e4e346d09b33ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef29656420d96c8bdbb92913b34e26176553835956fcc7f564e4e346d09b33ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef29656420d96c8bdbb92913b34e26176553835956fcc7f564e4e346d09b33ce", kill_on_drop: false }`
[INFO] [stdout] ef29656420d96c8bdbb92913b34e26176553835956fcc7f564e4e346d09b33ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 67c81a3e0541d23fa3f6e57491e1e3a21b0fea818ae16206abba3caa6dd1221b
[INFO] running `Command { std: "docker" "start" "-a" "67c81a3e0541d23fa3f6e57491e1e3a21b0fea818ae16206abba3caa6dd1221b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking helper_fn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `colon`
[INFO] [stdout]    --> src/lib.rs:161:3
[INFO] [stdout]     |
[INFO] [stdout] 161 |   colon: Token![:],
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `colon`
[INFO] [stdout]    --> src/lib.rs:161:3
[INFO] [stdout]     |
[INFO] [stdout] 161 |   colon: Token![:],
[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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `colon`
[INFO] [stdout]    --> src/lib.rs:161:3
[INFO] [stdout]     |
[INFO] [stdout] 161 |   colon: Token![:],
[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] [stdout] warning: unused macro definition: `get_num`
[INFO] [stdout]   --> tests/test.rs:21:6
[INFO] [stdout]    |
[INFO] [stdout] 21 |   fn get_num() -> i32 {
[INFO] [stdout]    |      ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `increment_num`
[INFO] [stdout]   --> tests/test.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 |     fn increment_num() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `make_num_zero`
[INFO] [stdout]   --> tests/test.rs:31:6
[INFO] [stdout]    |
[INFO] [stdout] 31 |   fn make_num_zero() {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.73s
[INFO] running `Command { std: "docker" "inspect" "67c81a3e0541d23fa3f6e57491e1e3a21b0fea818ae16206abba3caa6dd1221b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67c81a3e0541d23fa3f6e57491e1e3a21b0fea818ae16206abba3caa6dd1221b", kill_on_drop: false }`
[INFO] [stdout] 67c81a3e0541d23fa3f6e57491e1e3a21b0fea818ae16206abba3caa6dd1221b