[INFO] fetching crate slvs 0.6.0...
[INFO] checking slvs-0.6.0 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate slvs 0.6.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate slvs 0.6.0 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slvs 0.6.0
[INFO] finished tweaking crates.io crate slvs 0.6.0
[INFO] tweaked toml for crates.io crate slvs 0.6.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate slvs 0.6.0 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shlex v1.1.0
[INFO] [stderr]   Downloaded peeking_take_while v0.1.2
[INFO] [stderr]   Downloaded serde v1.0.164
[INFO] [stderr]   Downloaded either v1.8.1
[INFO] [stderr]   Downloaded which v4.4.0
[INFO] [stderr]   Downloaded quote v1.0.28
[INFO] [stderr]   Downloaded libloading v0.7.4
[INFO] [stderr]   Downloaded clang-sys v1.6.1
[INFO] [stderr]   Downloaded memchr v2.5.0
[INFO] [stderr]   Downloaded euclid v0.22.9
[INFO] [stderr]   Downloaded cc v1.0.79
[INFO] [stderr]   Downloaded serde_derive v1.0.164
[INFO] [stderr]   Downloaded proc-macro2 v1.0.60
[INFO] [stderr]   Downloaded syn v2.0.18
[INFO] [stderr]   Downloaded unicode-ident v1.0.9
[INFO] [stderr]   Downloaded bindgen v0.64.0
[INFO] [stderr]   Downloaded log v0.4.19
[INFO] [stderr]   Downloaded once_cell v1.18.0
[INFO] [stderr]   Downloaded regex v1.8.4
[INFO] [stderr]   Downloaded num-traits v0.2.15
[INFO] [stderr]   Downloaded dunce v1.0.4
[INFO] [stderr]   Downloaded regex-syntax v0.7.2
[INFO] [stderr]   Downloaded libc v0.2.146
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f57840088da31023d619de978029c5dc0986f8f67f0d490d98d16696abfda8b
[INFO] running `Command { std: "docker" "start" "-a" "6f57840088da31023d619de978029c5dc0986f8f67f0d490d98d16696abfda8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f57840088da31023d619de978029c5dc0986f8f67f0d490d98d16696abfda8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f57840088da31023d619de978029c5dc0986f8f67f0d490d98d16696abfda8b", kill_on_drop: false }`
[INFO] [stdout] 6f57840088da31023d619de978029c5dc0986f8f67f0d490d98d16696abfda8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6dc000fe74af3d879a274b447df898c9548e8bcdd255f17a9aa06a72f2ad2da2
[INFO] running `Command { std: "docker" "start" "-a" "6dc000fe74af3d879a274b447df898c9548e8bcdd255f17a9aa06a72f2ad2da2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling either v1.8.1
[INFO] [stderr]    Compiling regex-syntax v0.7.2
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling bindgen v0.64.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling clang-sys v1.6.1
[INFO] [stderr]    Compiling libloading v0.7.4
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling log v0.4.19
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling dunce v1.0.4
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling serde v1.0.164
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]    Compiling which v4.4.0
[INFO] [stderr]     Checking euclid v0.22.9
[INFO] [stderr]    Compiling regex v1.8.4
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.164
[INFO] [stderr]    Compiling slvs v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/system.rs:1017:13
[INFO] [stdout]      |
[INFO] [stdout] 1017 |         let mut param = self.mut_slvs_param(h)?;
[INFO] [stdout]      |             ----^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/system.rs:1017:13
[INFO] [stdout]      |
[INFO] [stdout] 1017 |         let mut param = self.mut_slvs_param(h)?;
[INFO] [stdout]      |             ----^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 26.00s
[INFO] running `Command { std: "docker" "inspect" "6dc000fe74af3d879a274b447df898c9548e8bcdd255f17a9aa06a72f2ad2da2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dc000fe74af3d879a274b447df898c9548e8bcdd255f17a9aa06a72f2ad2da2", kill_on_drop: false }`
[INFO] [stdout] 6dc000fe74af3d879a274b447df898c9548e8bcdd255f17a9aa06a72f2ad2da2