[INFO] fetching crate core_extensions_proc_macros 1.5.1...
[INFO] checking core_extensions_proc_macros-1.5.1 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate core_extensions_proc_macros 1.5.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate core_extensions_proc_macros 1.5.1 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate core_extensions_proc_macros 1.5.1
[INFO] finished tweaking crates.io crate core_extensions_proc_macros 1.5.1
[INFO] tweaked toml for crates.io crate core_extensions_proc_macros 1.5.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b228c70e5727a6030bb153417a424cf959563a7f91d5702af96bd9476a21a576
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b228c70e5727a6030bb153417a424cf959563a7f91d5702af96bd9476a21a576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b228c70e5727a6030bb153417a424cf959563a7f91d5702af96bd9476a21a576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b228c70e5727a6030bb153417a424cf959563a7f91d5702af96bd9476a21a576", kill_on_drop: false }`
[INFO] [stdout] b228c70e5727a6030bb153417a424cf959563a7f91d5702af96bd9476a21a576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f66bbd8b66d5e1a399c871c57c423762377b254595b6a11480485312f6f3fff
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6f66bbd8b66d5e1a399c871c57c423762377b254595b6a11480485312f6f3fff", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]     Checking core_extensions_proc_macros v1.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `String`, `ToString`
[INFO] [stdout]  --> src/tests.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use alloc::string::{String, ToString};
[INFO] [stdout]   |                     ^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_try_proc`
[INFO] [stdout]   --> src/test_utils.rs:27:15
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub(crate) fn test_try_proc(
[INFO] [stdout]    |               ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `format_res`
[INFO] [stdout]   --> src/test_utils.rs:51:4
[INFO] [stdout]    |
[INFO] [stdout] 51 | fn format_res(res: &Result<String, String>) -> String {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `map_both`
[INFO] [stdout]   --> src/test_utils.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn map_both<T, U, F>(res: Result<T, T>, func: F) -> Result<U, U>
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6f66bbd8b66d5e1a399c871c57c423762377b254595b6a11480485312f6f3fff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f66bbd8b66d5e1a399c871c57c423762377b254595b6a11480485312f6f3fff", kill_on_drop: false }`
[INFO] [stdout] 6f66bbd8b66d5e1a399c871c57c423762377b254595b6a11480485312f6f3fff