[INFO] cloning repository https://github.com/andrewlowndes/rust-expr-macros
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andrewlowndes/rust-expr-macros" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewlowndes%2Frust-expr-macros", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewlowndes%2Frust-expr-macros'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d63c903aeecce590c2560f86f2e7995040828de6
[INFO] checking andrewlowndes/rust-expr-macros against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewlowndes%2Frust-expr-macros" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/andrewlowndes/rust-expr-macros 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 git repo https://github.com/andrewlowndes/rust-expr-macros
[INFO] finished tweaking git repo https://github.com/andrewlowndes/rust-expr-macros
[INFO] tweaked toml for git repo https://github.com/andrewlowndes/rust-expr-macros written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/andrewlowndes/rust-expr-macros already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] a2b300d951215a96eabccc7d4eefd6a5cc978d6ba95c2283f7afd921fa56ce1d
[INFO] running `Command { std: "docker" "start" "-a" "a2b300d951215a96eabccc7d4eefd6a5cc978d6ba95c2283f7afd921fa56ce1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2b300d951215a96eabccc7d4eefd6a5cc978d6ba95c2283f7afd921fa56ce1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2b300d951215a96eabccc7d4eefd6a5cc978d6ba95c2283f7afd921fa56ce1d", kill_on_drop: false }`
[INFO] [stdout] a2b300d951215a96eabccc7d4eefd6a5cc978d6ba95c2283f7afd921fa56ce1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] acb59e006bc6d328d6b3f0875d06e0e9a8c5bc09ff3ec9c7b1d530d83f4825bd
[INFO] running `Command { std: "docker" "start" "-a" "acb59e006bc6d328d6b3f0875d06e0e9a8c5bc09ff3ec9c7b1d530d83f4825bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking syn v2.0.48
[INFO] [stderr]     Checking to-expr-core v0.1.0 (/opt/rustwide/workdir/crates/core)
[INFO] [stderr]     Checking to-expr-macro v0.1.0 (/opt/rustwide/workdir/crates/macro)
[INFO] [stderr]     Checking to-expr-example-lib v0.1.0 (/opt/rustwide/workdir/crates/example_lib)
[INFO] [stderr]    Compiling to-expr-example-macro v0.1.0 (/opt/rustwide/workdir/crates/example_macro)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> crates/example_macro/src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     format!("My {test_str} test string");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> crates/example_macro/src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     format!("My {test_str} test string");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> crates/example_macro/src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     format!("My {test_str} test string");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `format` (in Nightly builds, run with -Z macro-backtrace for more info)
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking to-expr-example-bin v0.1.0 (/opt/rustwide/workdir/crates/example_bin)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.10s
[INFO] running `Command { std: "docker" "inspect" "acb59e006bc6d328d6b3f0875d06e0e9a8c5bc09ff3ec9c7b1d530d83f4825bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acb59e006bc6d328d6b3f0875d06e0e9a8c5bc09ff3ec9c7b1d530d83f4825bd", kill_on_drop: false }`
[INFO] [stdout] acb59e006bc6d328d6b3f0875d06e0e9a8c5bc09ff3ec9c7b1d530d83f4825bd