[INFO] fetching crate dahl-salso 0.6.6...
[INFO] checking dahl-salso-0.6.6 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate dahl-salso 0.6.6 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate dahl-salso 0.6.6 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 crates.io crate dahl-salso 0.6.6
[INFO] finished tweaking crates.io crate dahl-salso 0.6.6
[INFO] tweaked toml for crates.io crate dahl-salso 0.6.6 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding hermit-abi v0.3.9 (latest: v0.4.0)
[INFO] [stderr]       Adding ndarray v0.15.6 (latest: v0.16.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dahl-partition v0.5.3
[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] 212ecacae32fd8e9b932b447e97d0911ea3b864ff33c515124f92b1c74edc669
[INFO] running `Command { std: "docker" "start" "-a" "212ecacae32fd8e9b932b447e97d0911ea3b864ff33c515124f92b1c74edc669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "212ecacae32fd8e9b932b447e97d0911ea3b864ff33c515124f92b1c74edc669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "212ecacae32fd8e9b932b447e97d0911ea3b864ff33c515124f92b1c74edc669", kill_on_drop: false }`
[INFO] [stdout] 212ecacae32fd8e9b932b447e97d0911ea3b864ff33c515124f92b1c74edc669
[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] f29a4cf1b7fda73ad0f74282952058f5ae5c1ae8a6f810bd25388994fc574f77
[INFO] running `Command { std: "docker" "start" "-a" "f29a4cf1b7fda73ad0f74282952058f5ae5c1ae8a6f810bd25388994fc574f77", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]     Checking crossbeam-channel v0.5.13
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking dahl-partition v0.5.3
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking dahl-salso v0.6.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/optimize.rs:1057:13
[INFO] [stdout]      |
[INFO] [stdout] 1057 |         let mut sc = &mut self.subsets[subset_index as usize];
[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: variable does not need to be mutable
[INFO] [stdout]     --> src/optimize.rs:1057:13
[INFO] [stdout]      |
[INFO] [stdout] 1057 |         let mut sc = &mut self.subsets[subset_index as usize];
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.81s
[INFO] running `Command { std: "docker" "inspect" "f29a4cf1b7fda73ad0f74282952058f5ae5c1ae8a6f810bd25388994fc574f77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f29a4cf1b7fda73ad0f74282952058f5ae5c1ae8a6f810bd25388994fc574f77", kill_on_drop: false }`
[INFO] [stdout] f29a4cf1b7fda73ad0f74282952058f5ae5c1ae8a6f810bd25388994fc574f77
[INFO] checking dahl-salso-0.6.6 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate dahl-salso 0.6.6 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate dahl-salso 0.6.6 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate dahl-salso 0.6.6
[INFO] finished tweaking crates.io crate dahl-salso 0.6.6
[INFO] tweaked toml for crates.io crate dahl-salso 0.6.6 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 34 packages to latest compatible versions
[INFO] [stderr]       Adding hermit-abi v0.3.9 (latest: v0.4.0)
[INFO] [stderr]       Adding ndarray v0.15.6 (latest: v0.16.1)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ead12f2a3e185d540f59033fb8dec96ab8a96885ac7a3b619e6f94422f76fbe7
[INFO] running `Command { std: "docker" "start" "-a" "ead12f2a3e185d540f59033fb8dec96ab8a96885ac7a3b619e6f94422f76fbe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ead12f2a3e185d540f59033fb8dec96ab8a96885ac7a3b619e6f94422f76fbe7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ead12f2a3e185d540f59033fb8dec96ab8a96885ac7a3b619e6f94422f76fbe7", kill_on_drop: false }`
[INFO] [stdout] ead12f2a3e185d540f59033fb8dec96ab8a96885ac7a3b619e6f94422f76fbe7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 130b74e4747893f0303c941e5ce2cea03c3f415b19af59eb8d1e32e84ffb3eb4
[INFO] running `Command { std: "docker" "start" "-a" "130b74e4747893f0303c941e5ce2cea03c3f415b19af59eb8d1e32e84ffb3eb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]     Checking crossbeam-channel v0.5.13
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking dahl-partition v0.5.3
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking dahl-salso v0.6.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/optimize.rs:1057:13
[INFO] [stdout]      |
[INFO] [stdout] 1057 |         let mut sc = &mut self.subsets[subset_index as usize];
[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: variable does not need to be mutable
[INFO] [stdout]     --> src/optimize.rs:1057:13
[INFO] [stdout]      |
[INFO] [stdout] 1057 |         let mut sc = &mut self.subsets[subset_index as usize];
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.90s
[INFO] running `Command { std: "docker" "inspect" "130b74e4747893f0303c941e5ce2cea03c3f415b19af59eb8d1e32e84ffb3eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "130b74e4747893f0303c941e5ce2cea03c3f415b19af59eb8d1e32e84ffb3eb4", kill_on_drop: false }`
[INFO] [stdout] 130b74e4747893f0303c941e5ce2cea03c3f415b19af59eb8d1e32e84ffb3eb4