[INFO] fetching crate streaming-decompression 0.1.2...
[INFO] checking streaming-decompression-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate streaming-decompression 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate streaming-decompression 0.1.2
[INFO] finished tweaking crates.io crate streaming-decompression 0.1.2
[INFO] tweaked toml for crates.io crate streaming-decompression 0.1.2 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate streaming-decompression 0.1.2 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] 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]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f3ec472622201ae7756b377908890ae53519b8cb348a1394db55117dfeb1fa1d
[INFO] running `Command { std: "docker" "start" "-a" "f3ec472622201ae7756b377908890ae53519b8cb348a1394db55117dfeb1fa1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3ec472622201ae7756b377908890ae53519b8cb348a1394db55117dfeb1fa1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3ec472622201ae7756b377908890ae53519b8cb348a1394db55117dfeb1fa1d", kill_on_drop: false }`
[INFO] [stdout] f3ec472622201ae7756b377908890ae53519b8cb348a1394db55117dfeb1fa1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ac35449a93fa2a054667eeef8f9ec1fc29d9bcaf250460e8be2e314aa78d39ae
[INFO] running `Command { std: "docker" "start" "-a" "ac35449a93fa2a054667eeef8f9ec1fc29d9bcaf250460e8be2e314aa78d39ae", kill_on_drop: false }`
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking streaming-decompression v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<DecompressedItem, Infallible>
[INFO] [stdout]    --> src/lib.rs:142:61
[INFO] [stdout]     |
[INFO] [stdout] 142 |       ) -> Result<DecompressedItem, std::convert::Infallible> {
[INFO] [stdout]     |  _____________________________________________________________^
[INFO] [stdout] 143 | |         if i.is_compressed() {
[INFO] [stdout] 144 | |             // the actual decompression, more complex stuff can happen.
[INFO] [stdout] 145 | |             buffer.clear();
[INFO] [stdout] ...   |
[INFO] [stdout] 153 | |         })
[INFO] [stdout] 154 | |     }
[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<DecompressedItem, Infallible>
[INFO] [stdout]    --> src/lib.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 | /         Ok(DecompressedItem {
[INFO] [stdout] 151 | |             metadata: i.metadata,
[INFO] [stdout] 152 | |             data: std::mem::take(buffer),
[INFO] [stdout] 153 | |         })
[INFO] [stdout]     | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompressedItem, Infallible>
[INFO] [stdout]    --> src/lib.rs:162:20
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let iter = vec![Ok(item)].into_iter();
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompressedItem, Infallible>
[INFO] [stdout]    --> src/lib.rs:162:20
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let iter = vec![Ok(item)].into_iter();
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompressedItem, Infallible>
[INFO] [stdout]    --> src/lib.rs:162:25
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let iter = vec![Ok(item)].into_iter();
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<&DecompressedItem>, Infallible>
[INFO] [stdout]    --> src/lib.rs:167:20
[INFO] [stdout]     |
[INFO] [stdout] 167 |         let item = decompressor.next().unwrap().unwrap();
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<&DecompressedItem>, Infallible>
[INFO] [stdout]    --> src/lib.rs:170:20
[INFO] [stdout]     |
[INFO] [stdout] 170 |         assert_eq!(decompressor.next().unwrap(), None);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompressedItem, Infallible>
[INFO] [stdout]    --> src/lib.rs:182:20
[INFO] [stdout]     |
[INFO] [stdout] 182 |         let iter = vec![Ok(item)].into_iter();
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompressedItem, Infallible>
[INFO] [stdout]    --> src/lib.rs:182:20
[INFO] [stdout]     |
[INFO] [stdout] 182 |         let iter = vec![Ok(item)].into_iter();
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<CompressedItem, Infallible>
[INFO] [stdout]    --> src/lib.rs:182:25
[INFO] [stdout]     |
[INFO] [stdout] 182 |         let iter = vec![Ok(item)].into_iter();
[INFO] [stdout]     |                         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<&DecompressedItem>, Infallible>
[INFO] [stdout]    --> src/lib.rs:187:20
[INFO] [stdout]     |
[INFO] [stdout] 187 |         let item = decompressor.next().unwrap().unwrap();
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Option<&DecompressedItem>, Infallible>
[INFO] [stdout]    --> src/lib.rs:190:20
[INFO] [stdout]     |
[INFO] [stdout] 190 |         assert_eq!(decompressor.next().unwrap(), None);
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `streaming-decompression` (lib test) due to 12 previous errors
[INFO] running `Command { std: "docker" "inspect" "ac35449a93fa2a054667eeef8f9ec1fc29d9bcaf250460e8be2e314aa78d39ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac35449a93fa2a054667eeef8f9ec1fc29d9bcaf250460e8be2e314aa78d39ae", kill_on_drop: false }`
[INFO] [stdout] ac35449a93fa2a054667eeef8f9ec1fc29d9bcaf250460e8be2e314aa78d39ae
