[INFO] fetching crate mixin 0.2.0...
[INFO] checking mixin-0.2.0 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate mixin 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mixin 0.2.0
[INFO] finished tweaking crates.io crate mixin 0.2.0
[INFO] tweaked toml for crates.io crate mixin 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mixin 0.2.0 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 10 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.117)
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b3ce1368d7e55f52b2e2b465c946e5d82f91ba5c30d815b1f81785bafe62371
[INFO] running `Command { std: "docker" "start" "-a" "8b3ce1368d7e55f52b2e2b465c946e5d82f91ba5c30d815b1f81785bafe62371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b3ce1368d7e55f52b2e2b465c946e5d82f91ba5c30d815b1f81785bafe62371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b3ce1368d7e55f52b2e2b465c946e5d82f91ba5c30d815b1f81785bafe62371", kill_on_drop: false }`
[INFO] [stdout] 8b3ce1368d7e55f52b2e2b465c946e5d82f91ba5c30d815b1f81785bafe62371
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcb5e3c637e8119406c87cf2fc718181e415d13675287d989102734e6164c949
[INFO] running `Command { std: "docker" "start" "-a" "bcb5e3c637e8119406c87cf2fc718181e415d13675287d989102734e6164c949", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking mixin v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> tests/test_macros.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     format!("{:?}", my_struct.clone());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let _ = format!("{:?}", my_struct.clone());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> tests/test_macros.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     format!("{:?}", my_struct.clone());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 80 |     let _ = format!("{:?}", my_struct.clone());
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.37s
[INFO] running `Command { std: "docker" "inspect" "bcb5e3c637e8119406c87cf2fc718181e415d13675287d989102734e6164c949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcb5e3c637e8119406c87cf2fc718181e415d13675287d989102734e6164c949", kill_on_drop: false }`
[INFO] [stdout] bcb5e3c637e8119406c87cf2fc718181e415d13675287d989102734e6164c949
