[INFO] fetching crate bcder 0.7.6...
[INFO] checking bcder-0.7.6 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate bcder 0.7.6 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate bcder 0.7.6
[INFO] finished tweaking crates.io crate bcder 0.7.6
[INFO] tweaked toml for crates.io crate bcder 0.7.6 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bcder 0.7.6 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 bcder 0.7.6 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7f693d5bf529b1f1c12c91cbfc4f407c93d7c36d6d07d2aaa7174a3d12259f20
[INFO] running `Command { std: "docker" "start" "-a" "7f693d5bf529b1f1c12c91cbfc4f407c93d7c36d6d07d2aaa7174a3d12259f20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f693d5bf529b1f1c12c91cbfc4f407c93d7c36d6d07d2aaa7174a3d12259f20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f693d5bf529b1f1c12c91cbfc4f407c93d7c36d6d07d2aaa7174a3d12259f20", kill_on_drop: false }`
[INFO] [stdout] 7f693d5bf529b1f1c12c91cbfc4f407c93d7c36d6d07d2aaa7174a3d12259f20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7eda23f745dc2b67cd491d11b441d9128140af2dbf3443393c1b31353263b0e2
[INFO] running `Command { std: "docker" "start" "-a" "7eda23f745dc2b67cd491d11b441d9128140af2dbf3443393c1b31353263b0e2", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.15.1
[INFO] [stderr]     Checking bcder v0.7.6 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:278:70
[INFO] [stdout]     |
[INFO] [stdout] 278 |       fn request(&mut self, _len: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  ______________________________________________________________________^
[INFO] [stdout] 279 | |         Ok(self.data.len())
[INFO] [stdout] 280 | |     }
[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/decode/source.rs:279:9
[INFO] [stdout]     |
[INFO] [stdout] 279 |         Ok(self.data.len())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:350:70
[INFO] [stdout]     |
[INFO] [stdout] 350 |       fn request(&mut self, _len: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  ______________________________________________________________________^
[INFO] [stdout] 351 | |         Ok(self.data.len())
[INFO] [stdout] 352 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:351:9
[INFO] [stdout]     |
[INFO] [stdout] 351 |         Ok(self.data.len())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/string/octet.rs:579:69
[INFO] [stdout]     |
[INFO] [stdout] 579 |       fn request(&mut self, len: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  _____________________________________________________________________^
[INFO] [stdout] 580 | |         if self.current.len() < len && !self.remainder.is_empty() {
[INFO] [stdout] 581 | |             // Make a new current that is at least `len` long.
[INFO] [stdout] 582 | |             let mut current = BytesMut::with_capacity(self.current.len());
[INFO] [stdout] ...   |
[INFO] [stdout] 594 | |         Ok(self.current.len())
[INFO] [stdout] 595 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/string/octet.rs:594:9
[INFO] [stdout]     |
[INFO] [stdout] 594 |         Ok(self.current.len())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bcder` (lib) due to 6 previous errors
[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/decode/source.rs:278:70
[INFO] [stdout]     |
[INFO] [stdout] 278 |       fn request(&mut self, _len: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  ______________________________________________________________________^
[INFO] [stdout] 279 | |         Ok(self.data.len())
[INFO] [stdout] 280 | |     }
[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/decode/source.rs:279:9
[INFO] [stdout]     |
[INFO] [stdout] 279 |         Ok(self.data.len())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:350:70
[INFO] [stdout]     |
[INFO] [stdout] 350 |       fn request(&mut self, _len: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  ______________________________________________________________________^
[INFO] [stdout] 351 | |         Ok(self.data.len())
[INFO] [stdout] 352 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:351:9
[INFO] [stdout]     |
[INFO] [stdout] 351 |         Ok(self.data.len())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:674:20
[INFO] [stdout]     |
[INFO] [stdout] 674 |         assert_eq!(source.take_opt_u8().unwrap(), Some(b'1'));
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:675:20
[INFO] [stdout]     |
[INFO] [stdout] 675 |         assert_eq!(source.take_opt_u8().unwrap(), Some(b'2'));
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:676:20
[INFO] [stdout]     |
[INFO] [stdout] 676 |         assert_eq!(source.take_opt_u8().unwrap(), Some(b'3'));
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<u8>, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:677:20
[INFO] [stdout]     |
[INFO] [stdout] 677 |         assert_eq!(source.take_opt_u8().unwrap(), None);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:683:17
[INFO] [stdout]     |
[INFO] [stdout] 683 |         assert!(bytes.request(4).unwrap() >= 4);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:687:17
[INFO] [stdout]     |
[INFO] [stdout] 687 |         assert!(bytes.request(4).unwrap() >= 4);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:690:20
[INFO] [stdout]     |
[INFO] [stdout] 690 |         assert_eq!(bytes.request(4).unwrap(), 2);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:693:20
[INFO] [stdout]     |
[INFO] [stdout] 693 |         assert_eq!(bytes.request(4).unwrap(), 0);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:699:17
[INFO] [stdout]     |
[INFO] [stdout] 699 |         assert!(bytes.request(4).unwrap() >= 4);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:703:17
[INFO] [stdout]     |
[INFO] [stdout] 703 |         assert!(bytes.request(4).unwrap() >= 4);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:706:20
[INFO] [stdout]     |
[INFO] [stdout] 706 |         assert_eq!(bytes.request(4).unwrap(), 2);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:709:20
[INFO] [stdout]     |
[INFO] [stdout] 709 |         assert_eq!(bytes.request(4).unwrap(), 0);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:721:20
[INFO] [stdout]     |
[INFO] [stdout] 721 |         assert_eq!(source.request(6).unwrap(), 4);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:724:20
[INFO] [stdout]     |
[INFO] [stdout] 724 |         assert_eq!(source.request(6).unwrap(), 2);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:727:20
[INFO] [stdout]     |
[INFO] [stdout] 727 |         assert_eq!(source.request(6).unwrap(), 0);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:748:20
[INFO] [stdout]     |
[INFO] [stdout] 748 |         assert_eq!(source.request(6).unwrap(), 4);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:750:20
[INFO] [stdout]     |
[INFO] [stdout] 750 |         assert_eq!(source.request(6).unwrap(), 0);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:767:24
[INFO] [stdout]     |
[INFO] [stdout] 767 |             assert_eq!(capture.request(4).unwrap(), 10);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/decode/source.rs:776:24
[INFO] [stdout]     |
[INFO] [stdout] 776 |             assert_eq!(capture.request(4).unwrap(), 10);
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/string/octet.rs:579:69
[INFO] [stdout]     |
[INFO] [stdout] 579 |       fn request(&mut self, len: usize) -> Result<usize, Self::Error> {
[INFO] [stdout]     |  _____________________________________________________________________^
[INFO] [stdout] 580 | |         if self.current.len() < len && !self.remainder.is_empty() {
[INFO] [stdout] 581 | |             // Make a new current that is at least `len` long.
[INFO] [stdout] 582 | |             let mut current = BytesMut::with_capacity(self.current.len());
[INFO] [stdout] ...   |
[INFO] [stdout] 594 | |         Ok(self.current.len())
[INFO] [stdout] 595 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/string/octet.rs:594:9
[INFO] [stdout]     |
[INFO] [stdout] 594 |         Ok(self.current.len())
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bcder` (lib test) due to 25 previous errors
[INFO] running `Command { std: "docker" "inspect" "7eda23f745dc2b67cd491d11b441d9128140af2dbf3443393c1b31353263b0e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7eda23f745dc2b67cd491d11b441d9128140af2dbf3443393c1b31353263b0e2", kill_on_drop: false }`
[INFO] [stdout] 7eda23f745dc2b67cd491d11b441d9128140af2dbf3443393c1b31353263b0e2