[INFO] fetching crate matrix-simp 0.3.0...
[INFO] testing matrix-simp-0.3.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate matrix-simp 0.3.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate matrix-simp 0.3.0
[INFO] finished tweaking crates.io crate matrix-simp 0.3.0
[INFO] tweaked toml for crates.io crate matrix-simp 0.3.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate matrix-simp 0.3.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d5de0c639db57a356a8c0b794aeefadd3b7684f767d23e7774bf2736e58ba92
[INFO] running `Command { std: "docker" "start" "-a" "4d5de0c639db57a356a8c0b794aeefadd3b7684f767d23e7774bf2736e58ba92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d5de0c639db57a356a8c0b794aeefadd3b7684f767d23e7774bf2736e58ba92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d5de0c639db57a356a8c0b794aeefadd3b7684f767d23e7774bf2736e58ba92", kill_on_drop: false }`
[INFO] [stdout] 4d5de0c639db57a356a8c0b794aeefadd3b7684f767d23e7774bf2736e58ba92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d39c3210b3f5e69c8940c0064eed64a9bfa3baf641ce602522fb350f74594da3
[INFO] running `Command { std: "docker" "start" "-a" "d39c3210b3f5e69c8940c0064eed64a9bfa3baf641ce602522fb350f74594da3", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix-simp v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "d39c3210b3f5e69c8940c0064eed64a9bfa3baf641ce602522fb350f74594da3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d39c3210b3f5e69c8940c0064eed64a9bfa3baf641ce602522fb350f74594da3", kill_on_drop: false }`
[INFO] [stdout] d39c3210b3f5e69c8940c0064eed64a9bfa3baf641ce602522fb350f74594da3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 350a63408a77a485712e1a461d2fb80b1fa5b445f4a2c38efa56709d84d097b2
[INFO] running `Command { std: "docker" "start" "-a" "350a63408a77a485712e1a461d2fb80b1fa5b445f4a2c38efa56709d84d097b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix-simp v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:422:13
[INFO] [stdout]     |
[INFO] [stdout] 422 |         let mut mat1: Matrix<f32> = Matrix::from(data1);
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "350a63408a77a485712e1a461d2fb80b1fa5b445f4a2c38efa56709d84d097b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "350a63408a77a485712e1a461d2fb80b1fa5b445f4a2c38efa56709d84d097b2", kill_on_drop: false }`
[INFO] [stdout] 350a63408a77a485712e1a461d2fb80b1fa5b445f4a2c38efa56709d84d097b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e166ae4ee6d7aa69f71501176aa61dded9788e2cc0143be92613b3c06e591abd
[INFO] running `Command { std: "docker" "start" "-a" "e166ae4ee6d7aa69f71501176aa61dded9788e2cc0143be92613b3c06e591abd", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:422:13
[INFO] [stderr]     |
[INFO] [stderr] 422 |         let mut mat1: Matrix<f32> = Matrix::from(data1);
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `matrix-simp` (lib test) generated 1 warning (run `cargo fix --lib -p matrix-simp --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/matrix_simp-f35a140a8e8cb823)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test tests::init_val ... ok
[INFO] [stdout] test tests::test_div_scalar ... ok
[INFO] [stdout] test tests::init_zeroes ... ok
[INFO] [stdout] test tests::test_from_2d_slice ... ok
[INFO] [stdout] test tests::test_from_2d_vec ... ok
[INFO] [stdout] test tests::test_exp ... ok
[INFO] [stdout] test tests::test_matrix_addition ... ok
[INFO] [stdout] test tests::test_matrix_subtraction ... ok
[INFO] [stdout] test tests::test_mult ... ok
[INFO] [stdout] test tests::test_get_row ... ok
[INFO] [stdout] test tests::test_get_col ... ok
[INFO] [stdout] test tests::test_mult_scalar ... ok
[INFO] [stdout] test tests::test_one_over ... ok
[INFO] [stdout] test tests::test_transpose ... ok
[INFO] [stdout] test tests::test_piece_by_mult ... ok
[INFO] [stdout] test tests::test_from_reg_add ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests matrix_simp
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e166ae4ee6d7aa69f71501176aa61dded9788e2cc0143be92613b3c06e591abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e166ae4ee6d7aa69f71501176aa61dded9788e2cc0143be92613b3c06e591abd", kill_on_drop: false }`
[INFO] [stdout] e166ae4ee6d7aa69f71501176aa61dded9788e2cc0143be92613b3c06e591abd