[INFO] fetching crate arsert_impl 0.0.2...
[INFO] checking arsert_impl-0.0.2 against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] extracting crate arsert_impl 0.0.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate arsert_impl 0.0.2 on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arsert_impl 0.0.2
[INFO] finished tweaking crates.io crate arsert_impl 0.0.2
[INFO] tweaked toml for crates.io crate arsert_impl 0.0.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded arsert_failure v0.0.2
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 643801f0f5772de649a162f6c7adb7460e91c67d227a3989de16cc7a2d67a4a0
[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" "643801f0f5772de649a162f6c7adb7460e91c67d227a3989de16cc7a2d67a4a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "643801f0f5772de649a162f6c7adb7460e91c67d227a3989de16cc7a2d67a4a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "643801f0f5772de649a162f6c7adb7460e91c67d227a3989de16cc7a2d67a4a0", kill_on_drop: false }`
[INFO] [stdout] 643801f0f5772de649a162f6c7adb7460e91c67d227a3989de16cc7a2d67a4a0
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ce1a427098454c07aa3247540933f2dd2a49d7d4355c5cec9c23669f07c975a
[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" "0ce1a427098454c07aa3247540933f2dd2a49d7d4355c5cec9c23669f07c975a", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking arsert_failure v0.0.2
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking arsert_impl v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/lib.rs:7:68
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::{self, parenthesized, parse_macro_input, Attribute, Expr, ExprPath, Result, Token};
[INFO] [stdout]   |                                                                    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{Expr, ExprPath, Result};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/binary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/simple.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions/simple.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{Expr, ExprPath};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/unary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/lib.rs:7:68
[INFO] [stdout]   |
[INFO] [stdout] 7 | use syn::{self, parenthesized, parse_macro_input, Attribute, Expr, ExprPath, Result, Token};
[INFO] [stdout]   |                                                                    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{Expr, ExprPath, Result};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/binary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/simple.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ExprPath`
[INFO] [stdout]  --> src/expressions/simple.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::{Expr, ExprPath};
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `proc_macro2`
[INFO] [stdout]  --> src/expressions/unary.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use proc_macro2;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.45s
[INFO] running `Command { std: "docker" "inspect" "0ce1a427098454c07aa3247540933f2dd2a49d7d4355c5cec9c23669f07c975a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ce1a427098454c07aa3247540933f2dd2a49d7d4355c5cec9c23669f07c975a", kill_on_drop: false }`
[INFO] [stdout] 0ce1a427098454c07aa3247540933f2dd2a49d7d4355c5cec9c23669f07c975a