[INFO] fetching crate multibody_dynamics 0.2.2...
[INFO] checking multibody_dynamics-0.2.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate multibody_dynamics 0.2.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate multibody_dynamics 0.2.2
[INFO] finished tweaking crates.io crate multibody_dynamics 0.2.2
[INFO] tweaked toml for crates.io crate multibody_dynamics 0.2.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate multibody_dynamics 0.2.2 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate multibody_dynamics 0.2.2 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c828a97efa9d032f6608341efb1722a65c5ea5e09d0a5aad920f9c2f5df9b6ed
[INFO] running `Command { std: "docker" "start" "-a" "c828a97efa9d032f6608341efb1722a65c5ea5e09d0a5aad920f9c2f5df9b6ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c828a97efa9d032f6608341efb1722a65c5ea5e09d0a5aad920f9c2f5df9b6ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c828a97efa9d032f6608341efb1722a65c5ea5e09d0a5aad920f9c2f5df9b6ed", kill_on_drop: false }`
[INFO] [stdout] c828a97efa9d032f6608341efb1722a65c5ea5e09d0a5aad920f9c2f5df9b6ed
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab3f78446cd3953c76e1455ca2169891422e868515e0717047621b7c2487fd72
[INFO] running `Command { std: "docker" "start" "-a" "ab3f78446cd3953c76e1455ca2169891422e868515e0717047621b7c2487fd72", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking simba v0.9.0
[INFO] [stderr]     Checking nalgebra v0.33.0
[INFO] [stderr]     Checking multibody_dynamics v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/multibody.rs:764:13
[INFO] [stdout]     |
[INFO] [stdout] 764 |         let mut multibody: MultiBody<2, 2> = MultiBody::new(
[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] [stdout] warning: unused variable: `mass_matrices`
[INFO] [stdout]    --> src/multibody.rs:750:13
[INFO] [stdout]     |
[INFO] [stdout] 750 |         let mass_matrices = vec![M_1, M_2];
[INFO] [stdout]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mass_matrices`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/multibody.rs:793:15
[INFO] [stdout]     |
[INFO] [stdout] 793 |             &|x: &[Vector6<f64>], y: &[Vector6<f64>]| -> SMatrix<f64, 6, 2> {
[INFO] [stdout]     |               ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/multibody.rs:793:35
[INFO] [stdout]     |
[INFO] [stdout] 793 |             &|x: &[Vector6<f64>], y: &[Vector6<f64>]| -> SMatrix<f64, 6, 2> {
[INFO] [stdout]     |                                   ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/multibody.rs:885:13
[INFO] [stdout]     |
[INFO] [stdout] 885 |         let mut multibody: MultiBody<9, 14> = MultiBody::new(
[INFO] [stdout]     |             ----^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/multibody.rs:926:15
[INFO] [stdout]     |
[INFO] [stdout] 926 |             &|x: &[Vector6<f64>], y: &[Vector6<f64>]| -> SMatrix<f64, 6, 9> {
[INFO] [stdout]     |               ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/multibody.rs:926:35
[INFO] [stdout]     |
[INFO] [stdout] 926 |             &|x: &[Vector6<f64>], y: &[Vector6<f64>]| -> SMatrix<f64, 6, 9> {
[INFO] [stdout]     |                                   ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/multibody.rs:1006:13
[INFO] [stdout]      |
[INFO] [stdout] 1006 |         let mut multibody: MultiBody<9, 14> = MultiBody::new(
[INFO] [stdout]      |             ----^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/multibody.rs:1155:13
[INFO] [stdout]      |
[INFO] [stdout] 1155 |         let mut multibody: MultiBody<9, 14> = MultiBody::new(
[INFO] [stdout]      |             ----^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `accel3`
[INFO] [stdout]     --> src/multibody.rs:1238:13
[INFO] [stdout]      |
[INFO] [stdout] 1238 |         let accel3 = multibody.forward_dynamics_ab(
[INFO] [stdout]      |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_accel3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]     --> src/multibody.rs:1198:15
[INFO] [stdout]      |
[INFO] [stdout] 1198 |             &|x: &[Vector6<f64>], y: &[Vector6<f64>]| -> SMatrix<f64, 6, 9> {
[INFO] [stdout]      |               ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> src/multibody.rs:1198:35
[INFO] [stdout]      |
[INFO] [stdout] 1198 |             &|x: &[Vector6<f64>], y: &[Vector6<f64>]| -> SMatrix<f64, 6, 9> {
[INFO] [stdout]      |                                   ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]     --> src/multibody.rs:1202:15
[INFO] [stdout]      |
[INFO] [stdout] 1202 |             &|x: &[Isometry3<f64>], y: &[Vector6<f64>]| -> SMatrix<f64, 6, 9> {
[INFO] [stdout]      |               ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> src/multibody.rs:1202:37
[INFO] [stdout]      |
[INFO] [stdout] 1202 |             &|x: &[Isometry3<f64>], y: &[Vector6<f64>]| -> SMatrix<f64, 6, 9> {
[INFO] [stdout]      |                                     ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Matrix<f64, Const<6>, Const<1>, ArrayStorage<f64, 6, 1>>, Infallible>
[INFO] [stdout]     --> src/multibody.rs:1066:41
[INFO] [stdout]      |
[INFO] [stdout] 1066 |         let djac_col: SVector<f64, 6> = djac.column(6).try_into().unwrap();
[INFO] [stdout]      |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Matrix<f64, Const<6>, Const<1>, ArrayStorage<f64, 6, 1>>, Infallible>
[INFO] [stdout]     --> src/multibody.rs:1067:40
[INFO] [stdout]      |
[INFO] [stdout] 1067 |         let jac_col: SVector<f64, 6> = jac.column(6).try_into().unwrap();
[INFO] [stdout]      |                                        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `multibody_dynamics` (lib test) due to 2 previous errors; 14 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ab3f78446cd3953c76e1455ca2169891422e868515e0717047621b7c2487fd72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab3f78446cd3953c76e1455ca2169891422e868515e0717047621b7c2487fd72", kill_on_drop: false }`
[INFO] [stdout] ab3f78446cd3953c76e1455ca2169891422e868515e0717047621b7c2487fd72
