[INFO] fetching crate roq-dec 0.1.0...
[INFO] checking roq-dec-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate roq-dec 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate roq-dec 0.1.0
[INFO] finished tweaking crates.io crate roq-dec 0.1.0
[INFO] tweaked toml for crates.io crate roq-dec 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate roq-dec 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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]      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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 849cc66780b0c55ce25b25196e690ca799609d0efda27be2e8c567d8efea15ec
[INFO] running `Command { std: "docker" "start" "-a" "849cc66780b0c55ce25b25196e690ca799609d0efda27be2e8c567d8efea15ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "849cc66780b0c55ce25b25196e690ca799609d0efda27be2e8c567d8efea15ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "849cc66780b0c55ce25b25196e690ca799609d0efda27be2e8c567d8efea15ec", kill_on_drop: false }`
[INFO] [stdout] 849cc66780b0c55ce25b25196e690ca799609d0efda27be2e8c567d8efea15ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] aa1d13619e4f4b7ef1d42d863e8b1c6cc3cc745ad41ad76aa21a2a212079f1b4
[INFO] running `Command { std: "docker" "start" "-a" "aa1d13619e4f4b7ef1d42d863e8b1c6cc3cc745ad41ad76aa21a2a212079f1b4", kill_on_drop: false }`
[INFO] [stderr]     Checking roq-dec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/roq_dec.rs:159:39
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut cell_cnt_2x2: usize = ((chunk_arg >> 8) & 0xFF).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<usize, Infallible>
[INFO] [stdout]    --> src/roq_dec.rs:160:39
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let mut cell_cnt_4x4: usize = (chunk_arg & 0xFF).try_into().unwrap();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/roq_dec.rs:491:22
[INFO] [stdout]     |
[INFO] [stdout] 491 |     pub fn read_next(&mut self) -> Result<RoqEvent<C>,RoqError> {
[INFO] [stdout]     |                      ^^^^^^^^^            ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 491 |     pub fn read_next(&mut self) -> Result<RoqEvent<'_, C>,RoqError> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `roq-dec` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/roq_dec.rs:159:39
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let mut cell_cnt_2x2: usize = ((chunk_arg >> 8) & 0xFF).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<usize, Infallible>
[INFO] [stdout]    --> src/roq_dec.rs:160:39
[INFO] [stdout]     |
[INFO] [stdout] 160 |         let mut cell_cnt_4x4: usize = (chunk_arg & 0xFF).try_into().unwrap();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/roq_dec.rs:491:22
[INFO] [stdout]     |
[INFO] [stdout] 491 |     pub fn read_next(&mut self) -> Result<RoqEvent<C>,RoqError> {
[INFO] [stdout]     |                      ^^^^^^^^^            ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 491 |     pub fn read_next(&mut self) -> Result<RoqEvent<'_, C>,RoqError> {
[INFO] [stdout]     |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `roq-dec` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "aa1d13619e4f4b7ef1d42d863e8b1c6cc3cc745ad41ad76aa21a2a212079f1b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa1d13619e4f4b7ef1d42d863e8b1c6cc3cc745ad41ad76aa21a2a212079f1b4", kill_on_drop: false }`
[INFO] [stdout] aa1d13619e4f4b7ef1d42d863e8b1c6cc3cc745ad41ad76aa21a2a212079f1b4
