[INFO] fetching crate http_encoding_headers 0.2.0...
[INFO] checking http_encoding_headers-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate http_encoding_headers 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate http_encoding_headers 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate http_encoding_headers 0.2.0
[INFO] tweaked toml for crates.io crate http_encoding_headers 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate http_encoding_headers 0.2.0 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] crate crates.io crate http_encoding_headers 0.2.0 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a546cceb05530c53c51450bc9c314fd4531f8d733e85c6ffa493e727e8d2ccd3
[INFO] running `Command { std: "docker" "start" "-a" "a546cceb05530c53c51450bc9c314fd4531f8d733e85c6ffa493e727e8d2ccd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a546cceb05530c53c51450bc9c314fd4531f8d733e85c6ffa493e727e8d2ccd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a546cceb05530c53c51450bc9c314fd4531f8d733e85c6ffa493e727e8d2ccd3", kill_on_drop: false }`
[INFO] [stdout] a546cceb05530c53c51450bc9c314fd4531f8d733e85c6ffa493e727e8d2ccd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a1b18176e37fa5edda5e3b176298bf989002d2d25c75468b08738688e1839ea6
[INFO] running `Command { std: "docker" "start" "-a" "a1b18176e37fa5edda5e3b176298bf989002d2d25c75468b08738688e1839ea6", kill_on_drop: false }`
[INFO] [stderr]     Checking headers-core v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]     Checking headers v0.4.1
[INFO] [stderr]     Checking thiserror v2.0.17
[INFO] [stderr]     Checking http_encoding_headers v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]    --> src/accept_encoding.rs:274:22
[INFO] [stdout]     |
[INFO] [stdout] 274 |         parsed.push((Encoding::from_str(enc).unwrap(), q));
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `http_encoding_headers` (lib) due to 18 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/content_encoding.rs:39:26
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 .map(|e| Encoding::from_str(e).unwrap())?;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:45:53
[INFO] [stdout]    |
[INFO] [stdout] 45 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 46 | |         let lowercase_s = s.to_lowercase();
[INFO] [stdout] 47 | |         match lowercase_s.as_str() {
[INFO] [stdout] 48 | |             ENC_GZIP => Ok(Encoding::Gzip),
[INFO] [stdout] ...  |
[INFO] [stdout] 63 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 | /         match lowercase_s.as_str() {
[INFO] [stdout] 48 | |             ENC_GZIP => Ok(Encoding::Gzip),
[INFO] [stdout] 49 | |             ENC_DEFLATE => Ok(Encoding::Deflate),
[INFO] [stdout] 50 | |             ENC_COMPRESS => Ok(Encoding::Compress),
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |             _ => Ok(Encoding::Custom(lowercase_s)),
[INFO] [stdout] 62 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |             ENC_GZIP => Ok(Encoding::Gzip),
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |             ENC_DEFLATE => Ok(Encoding::Deflate),
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:50:29
[INFO] [stdout]    |
[INFO] [stdout] 50 |             ENC_COMPRESS => Ok(Encoding::Compress),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:51:29
[INFO] [stdout]    |
[INFO] [stdout] 51 |             ENC_IDENTITY => Ok(Encoding::Identity),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:52:23
[INFO] [stdout]    |
[INFO] [stdout] 52 |             ENC_BR => Ok(Encoding::Br),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:53:25
[INFO] [stdout]    |
[INFO] [stdout] 53 |             ENC_ZSTD => Ok(Encoding::Zstd),
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |             ENC_SNAPPY => Ok(Encoding::Snappy),
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:55:23
[INFO] [stdout]    |
[INFO] [stdout] 55 |             ENC_XZ => Ok(Encoding::Xz),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |             ENC_LZMA => Ok(Encoding::Lzma),
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:57:26
[INFO] [stdout]    |
[INFO] [stdout] 57 |             ENC_BZIP2 => Ok(Encoding::Bzip2),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:58:24
[INFO] [stdout]    |
[INFO] [stdout] 58 |             ENC_LZ4 => Ok(Encoding::Lz4),
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:59:25
[INFO] [stdout]    |
[INFO] [stdout] 59 |             ENC_ZLIB => Ok(Encoding::Zlib),
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:60:29
[INFO] [stdout]    |
[INFO] [stdout] 60 |             ENC_WILDCARD => Ok(Encoding::Wildcard),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |             _ => Ok(Encoding::Custom(lowercase_s)),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]    --> src/accept_encoding.rs:274:22
[INFO] [stdout]     |
[INFO] [stdout] 274 |         parsed.push((Encoding::from_str(enc).unwrap(), q));
[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<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/content_encoding.rs:39:26
[INFO] [stdout]    |
[INFO] [stdout] 39 |                 .map(|e| Encoding::from_str(e).unwrap())?;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:45:53
[INFO] [stdout]    |
[INFO] [stdout] 45 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 46 | |         let lowercase_s = s.to_lowercase();
[INFO] [stdout] 47 | |         match lowercase_s.as_str() {
[INFO] [stdout] 48 | |             ENC_GZIP => Ok(Encoding::Gzip),
[INFO] [stdout] ...  |
[INFO] [stdout] 63 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 | /         match lowercase_s.as_str() {
[INFO] [stdout] 48 | |             ENC_GZIP => Ok(Encoding::Gzip),
[INFO] [stdout] 49 | |             ENC_DEFLATE => Ok(Encoding::Deflate),
[INFO] [stdout] 50 | |             ENC_COMPRESS => Ok(Encoding::Compress),
[INFO] [stdout] ...  |
[INFO] [stdout] 61 | |             _ => Ok(Encoding::Custom(lowercase_s)),
[INFO] [stdout] 62 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |             ENC_GZIP => Ok(Encoding::Gzip),
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |             ENC_DEFLATE => Ok(Encoding::Deflate),
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:50:29
[INFO] [stdout]    |
[INFO] [stdout] 50 |             ENC_COMPRESS => Ok(Encoding::Compress),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:51:29
[INFO] [stdout]    |
[INFO] [stdout] 51 |             ENC_IDENTITY => Ok(Encoding::Identity),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:52:23
[INFO] [stdout]    |
[INFO] [stdout] 52 |             ENC_BR => Ok(Encoding::Br),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:53:25
[INFO] [stdout]    |
[INFO] [stdout] 53 |             ENC_ZSTD => Ok(Encoding::Zstd),
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:54:27
[INFO] [stdout]    |
[INFO] [stdout] 54 |             ENC_SNAPPY => Ok(Encoding::Snappy),
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:55:23
[INFO] [stdout]    |
[INFO] [stdout] 55 |             ENC_XZ => Ok(Encoding::Xz),
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:56:25
[INFO] [stdout]    |
[INFO] [stdout] 56 |             ENC_LZMA => Ok(Encoding::Lzma),
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:57:26
[INFO] [stdout]    |
[INFO] [stdout] 57 |             ENC_BZIP2 => Ok(Encoding::Bzip2),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:58:24
[INFO] [stdout]    |
[INFO] [stdout] 58 |             ENC_LZ4 => Ok(Encoding::Lz4),
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:59:25
[INFO] [stdout]    |
[INFO] [stdout] 59 |             ENC_ZLIB => Ok(Encoding::Zlib),
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:60:29
[INFO] [stdout]    |
[INFO] [stdout] 60 |             ENC_WILDCARD => Ok(Encoding::Wildcard),
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<encoding::Encoding, Infallible>
[INFO] [stdout]   --> src/encoding.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |             _ => Ok(Encoding::Custom(lowercase_s)),
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `http_encoding_headers` (lib test) due to 18 previous errors
[INFO] running `Command { std: "docker" "inspect" "a1b18176e37fa5edda5e3b176298bf989002d2d25c75468b08738688e1839ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1b18176e37fa5edda5e3b176298bf989002d2d25c75468b08738688e1839ea6", kill_on_drop: false }`
[INFO] [stdout] a1b18176e37fa5edda5e3b176298bf989002d2d25c75468b08738688e1839ea6