[INFO] fetching crate mimesniff 0.3.0...
[INFO] checking mimesniff-0.3.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate mimesniff 0.3.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate mimesniff 0.3.0 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mimesniff 0.3.0
[INFO] finished tweaking crates.io crate mimesniff 0.3.0
[INFO] tweaked toml for crates.io crate mimesniff 0.3.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e4039ef4e4eb0f456bfa0c8576ee02c52e03cab1cca0c4e11b016e6ab2532df
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1e4039ef4e4eb0f456bfa0c8576ee02c52e03cab1cca0c4e11b016e6ab2532df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e4039ef4e4eb0f456bfa0c8576ee02c52e03cab1cca0c4e11b016e6ab2532df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4039ef4e4eb0f456bfa0c8576ee02c52e03cab1cca0c4e11b016e6ab2532df", kill_on_drop: false }`
[INFO] [stdout] 1e4039ef4e4eb0f456bfa0c8576ee02c52e03cab1cca0c4e11b016e6ab2532df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5302da586e00f040e500a5d64f626a0aeef2fb96ea89ce153238cd8002096ea4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5302da586e00f040e500a5d64f626a0aeef2fb96ea89ce153238cd8002096ea4", kill_on_drop: false }`
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking mimesniff v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `is_unknown_mime_type`, `sniff_mime_type`
[INFO] [stdout]  --> src/mimesniffer/api.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::magic::{is_unknown_mime_type, sniff_mime_type, sniff_mime_type_from_local_data};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/mimesniffer/magic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `is_unknown_mime_type`, `sniff_mime_type`
[INFO] [stdout]  --> src/mimesniffer/api.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::magic::{is_unknown_mime_type, sniff_mime_type, sniff_mime_type_from_local_data};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/mimesniffer/magic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stdout]  --> src/mimesniffer/magic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `String`
[INFO] [stdout]  --> src/mimesniffer/magic.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     String(&'static str, &'static str),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BYTES_REQUIRED_FOR_MAGIC`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:105:1
[INFO] [stdout]     |
[INFO] [stdout] 105 | const BYTES_REQUIRED_FOR_MAGIC: usize = 42;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_BYTES_TO_SNIFF_HTML`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:107:1
[INFO] [stdout]     |
[INFO] [stdout] 107 | const MAX_BYTES_TO_SNIFF_HTML: usize = 512;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_BYTES_TO_SNIFF_BIN`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | const MAX_BYTES_TO_SNIFF_BIN: usize = 512;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_BYTES_TO_SNIFF_XML`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:109:1
[INFO] [stdout]     |
[INFO] [stdout] 109 | const MAX_BYTES_TO_SNIFF_XML: usize = 300;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sniff_mime_type`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub fn sniff_mime_type<'a>(buf: &'a [u8], url: &'a str, type_hint: &'a str) -> Option<&'a str> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `UNKNOWN_MIME_TYPES`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:263:1
[INFO] [stdout]     |
[INFO] [stdout] 263 | / const UNKNOWN_MIME_TYPES: &'static [&'static str] =
[INFO] [stdout] 264 | |     &["", "unknown/unknown", "application/unknown", "*/*"];
[INFO] [stdout]     | |___________________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_unknown_mime_type`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:266:8
[INFO] [stdout]     |
[INFO] [stdout] 266 | pub fn is_unknown_mime_type(type_hint: &str) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `truncate_size`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:274:8
[INFO] [stdout]     |
[INFO] [stdout] 274 | pub fn truncate_size(content: &[u8], max_size: usize) -> (&[u8], bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SNIFFABLE_TAGS`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:290:1
[INFO] [stdout]     |
[INFO] [stdout] 290 | / const SNIFFABLE_TAGS: &'static [Magic] = &[
[INFO] [stdout] 291 | |     // XML processing directive.  Although this is not an HTML mime type, we sniff
[INFO] [stdout] 292 | |    // for this in the HTML phase because text/xml is just as powerful as HTML and
[INFO] [stdout] 293 | |    // we want to leverage our white space skipping technology.
[INFO] [stdout] ...   |
[INFO] [stdout] 314 | |    html_tag!("p") /* Mozilla */
[INFO] [stdout] 315 | | ];
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sniff_for_html`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:319:8
[INFO] [stdout]     |
[INFO] [stdout] 319 | pub fn sniff_for_html(content: &[u8]) -> (Option<&str>, bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BYTE_ORDER_MARKS`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:342:1
[INFO] [stdout]     |
[INFO] [stdout] 342 | / const BYTE_ORDER_MARKS: &'static [Magic] = &[
[INFO] [stdout] 343 | |     // UTF-16BE
[INFO] [stdout] 344 | |     Magic::Number("text/plain", b"\xFE\xFF"),
[INFO] [stdout] 345 | |     // UTF-16LE
[INFO] [stdout] ...   |
[INFO] [stdout] 348 | |     Magic::Number("text/plain", b"\xEF\xBB\xBF"),
[INFO] [stdout] 349 | | ];
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BYTE_LOOKS_BINARY`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:354:1
[INFO] [stdout]     |
[INFO] [stdout] 354 | / const BYTE_LOOKS_BINARY: &'static [u8] = &[
[INFO] [stdout] 355 | |    1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 1, 0, 0, 1, 1,  // 0x00 - 0x0F
[INFO] [stdout] 356 | |    1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1,  // 0x10 - 0x1F
[INFO] [stdout] 357 | |    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  // 0x20 - 0x2F
[INFO] [stdout] ...   |
[INFO] [stdout] 370 | |    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  // 0xF0 - 0xFF
[INFO] [stdout] 371 | |  ];
[INFO] [stdout]     | |___^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sniff_binary`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:376:8
[INFO] [stdout]     |
[INFO] [stdout] 376 | pub fn sniff_binary(content: &[u8]) -> (Option<&str>, bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `XML_TAG`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:404:1
[INFO] [stdout]     |
[INFO] [stdout] 404 | const XML_TAG: &'static [u8] = b"<?xml";
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DOCTYPE_TAG`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:405:1
[INFO] [stdout]     |
[INFO] [stdout] 405 | const DOCTYPE_TAG: &'static [u8] = b"<!DOCTYPE";
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAGIC_XML`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:407:1
[INFO] [stdout]     |
[INFO] [stdout] 407 | / const MAGIC_XML: &'static [Magic] = &[
[INFO] [stdout] 408 | |     Magic::String(
[INFO] [stdout] 409 | |         "application/xhtml+xml",
[INFO] [stdout] 410 | |         "<html xmlns=\"http://www.w3.\
[INFO] [stdout] ...   |
[INFO] [stdout] 414 | |     Magic::String("application/rss+xml", "<rss"),
[INFO] [stdout] 415 | | ];
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sniff_xml`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:424:8
[INFO] [stdout]     |
[INFO] [stdout] 424 | pub fn sniff_xml<'a>(content: &[u8], type_hint: &'a str) -> (Option<&'a str>, bool) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `OfficeDocType`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:460:10
[INFO] [stdout]     |
[INFO] [stdout] 460 | pub enum OfficeDocType {
[INFO] [stdout]     |          ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `OFFICE_EXTENSION_TYPES`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:466:1
[INFO] [stdout]     |
[INFO] [stdout] 466 | / const OFFICE_EXTENSION_TYPES: &'static [(OfficeDocType, &'static str)] = &[
[INFO] [stdout] 467 | |     (OfficeDocType::Word, ".doc"),
[INFO] [stdout] 468 | |     (OfficeDocType::Excel, ".xls"),
[INFO] [stdout] 469 | |     (OfficeDocType::PowerPoint, ".ppt"),
[INFO] [stdout] ...   |
[INFO] [stdout] 472 | |     (OfficeDocType::PowerPoint, ".pptx"),
[INFO] [stdout] 473 | | ];
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BYTES_REQUIRED_FOR_OFFICE_MAGIC`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:476:1
[INFO] [stdout]     |
[INFO] [stdout] 476 | const BYTES_REQUIRED_FOR_OFFICE_MAGIC: usize = 8;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `OFFICE_MAGIC_NUMBERS`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:478:1
[INFO] [stdout]     |
[INFO] [stdout] 478 | / const OFFICE_MAGIC_NUMBERS: &'static [Magic] = &[
[INFO] [stdout] 479 | |     Magic::Number("CFB", b"\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1"),
[INFO] [stdout] 480 | |     Magic::Number("OOXML", b"PK\x03\x04"),
[INFO] [stdout] 481 | | ];
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_office_mime_type`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:483:8
[INFO] [stdout]     |
[INFO] [stdout] 483 | pub fn is_office_mime_type(type_hint: &str) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sniff_for_invalid_office_docs`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:511:8
[INFO] [stdout]     |
[INFO] [stdout] 511 | pub fn sniff_for_invalid_office_docs<'a>(content: &[u8], type_hint: &'a str) -> Option<&'a str> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sniff_for_office_docs`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:530:8
[INFO] [stdout]     |
[INFO] [stdout] 530 | pub fn sniff_for_office_docs<'a>(content: &[u8], url: &'a str) -> (Option<&'a str>, bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sniff_for_magic_numbers`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:573:8
[INFO] [stdout]     |
[INFO] [stdout] 573 | pub fn sniff_for_magic_numbers(content: &[u8]) -> (Option<&str>, bool) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SNIFFABLE_TYPES`
[INFO] [stdout]   --> src/mimesniffer/api.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | / const SNIFFABLE_TYPES: &'static [&'static str] = &[
[INFO] [stdout] 55 | |     // Many web servers are misconfigured to send text/plain for many
[INFO] [stdout] 56 | |     // different types of content.
[INFO] [stdout] 57 | |     "text/plain",
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |     "application/vnd.msword",
[INFO] [stdout] 80 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 30 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ascii::AsciiExt`
[INFO] [stdout]  --> src/mimesniffer/magic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sniff_mime_type`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 142 | pub fn sniff_mime_type<'a>(buf: &'a [u8], url: &'a str, type_hint: &'a str) -> Option<&'a str> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_office_mime_type`
[INFO] [stdout]    --> src/mimesniffer/magic.rs:483:8
[INFO] [stdout]     |
[INFO] [stdout] 483 | pub fn is_office_mime_type(type_hint: &str) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `SNIFFABLE_TYPES`
[INFO] [stdout]   --> src/mimesniffer/api.rs:54:1
[INFO] [stdout]    |
[INFO] [stdout] 54 | / const SNIFFABLE_TYPES: &'static [&'static str] = &[
[INFO] [stdout] 55 | |     // Many web servers are misconfigured to send text/plain for many
[INFO] [stdout] 56 | |     // different types of content.
[INFO] [stdout] 57 | |     "text/plain",
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |     "application/vnd.msword",
[INFO] [stdout] 80 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "5302da586e00f040e500a5d64f626a0aeef2fb96ea89ce153238cd8002096ea4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5302da586e00f040e500a5d64f626a0aeef2fb96ea89ce153238cd8002096ea4", kill_on_drop: false }`
[INFO] [stdout] 5302da586e00f040e500a5d64f626a0aeef2fb96ea89ce153238cd8002096ea4