[INFO] fetching crate mimesniff 0.3.0...
[INFO] checking mimesniff-0.3.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate mimesniff 0.3.0 into /workspace/builds/worker-0-tc1/source
[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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mimesniff 0.3.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f93c74ae40b82b63054d14cdd156f16d011ac6b08bce7df113bef09548dd0b8
[INFO] running `Command { std: "docker" "start" "-a" "6f93c74ae40b82b63054d14cdd156f16d011ac6b08bce7df113bef09548dd0b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f93c74ae40b82b63054d14cdd156f16d011ac6b08bce7df113bef09548dd0b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f93c74ae40b82b63054d14cdd156f16d011ac6b08bce7df113bef09548dd0b8", kill_on_drop: false }`
[INFO] [stdout] 6f93c74ae40b82b63054d14cdd156f16d011ac6b08bce7df113bef09548dd0b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 17fff106f8c194bceca50be4f80e026c43ae11460fc4556bd7f053e2dffabee8
[INFO] running `Command { std: "docker" "start" "-a" "17fff106f8c194bceca50be4f80e026c43ae11460fc4556bd7f053e2dffabee8", kill_on_drop: false }`
[INFO] [stderr]     Checking mime v0.3.17
[INFO] [stderr]     Checking mimesniff v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `is_unknown_mime_type` and `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: unused imports: `MimeTypeSniffable` and `MimeTypeSniffer`
[INFO] [stdout]    --> src/mimesniffer/mod.rs:143:15
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub use api::{MimeTypeSniffable, MimeTypeSniffer, MimeTypeSnifferExt};
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/mimesniffer/magic.rs:1:17
[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 `String` is never constructed
[INFO] [stdout]  --> src/mimesniffer/magic.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Magic {
[INFO] [stdout]   |          ----- variant in this enum
[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 `BYTES_REQUIRED_FOR_MAGIC` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:105:7
[INFO] [stdout]     |
[INFO] [stdout] 105 | const BYTES_REQUIRED_FOR_MAGIC: usize = 42;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_BYTES_TO_SNIFF_HTML` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:107:7
[INFO] [stdout]     |
[INFO] [stdout] 107 | const MAX_BYTES_TO_SNIFF_HTML: usize = 512;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_BYTES_TO_SNIFF_BIN` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:108:7
[INFO] [stdout]     |
[INFO] [stdout] 108 | const MAX_BYTES_TO_SNIFF_BIN: usize = 512;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_BYTES_TO_SNIFF_XML` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:109:7
[INFO] [stdout]     |
[INFO] [stdout] 109 | const MAX_BYTES_TO_SNIFF_XML: usize = 300;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sniff_mime_type` is never used
[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 `UNKNOWN_MIME_TYPES` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:263:7
[INFO] [stdout]     |
[INFO] [stdout] 263 | const UNKNOWN_MIME_TYPES: &'static [&'static str] =
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_unknown_mime_type` is never used
[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 `truncate_size` is never used
[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 `SNIFFABLE_TAGS` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:290:7
[INFO] [stdout]     |
[INFO] [stdout] 290 | const SNIFFABLE_TAGS: &'static [Magic] = &[
[INFO] [stdout]     |       ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sniff_for_html` is never used
[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 `BYTE_ORDER_MARKS` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:342:7
[INFO] [stdout]     |
[INFO] [stdout] 342 | const BYTE_ORDER_MARKS: &'static [Magic] = &[
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BYTE_LOOKS_BINARY` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:354:7
[INFO] [stdout]     |
[INFO] [stdout] 354 | const BYTE_LOOKS_BINARY: &'static [u8] = &[
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sniff_binary` is never used
[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 `XML_TAG` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:404:7
[INFO] [stdout]     |
[INFO] [stdout] 404 | const XML_TAG: &'static [u8] = b"<?xml";
[INFO] [stdout]     |       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `DOCTYPE_TAG` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:405:7
[INFO] [stdout]     |
[INFO] [stdout] 405 | const DOCTYPE_TAG: &'static [u8] = b"<!DOCTYPE";
[INFO] [stdout]     |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAGIC_XML` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:407:7
[INFO] [stdout]     |
[INFO] [stdout] 407 | const MAGIC_XML: &'static [Magic] = &[
[INFO] [stdout]     |       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `sniff_xml` is never used
[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 `OfficeDocType` is never used
[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 `OFFICE_EXTENSION_TYPES` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:466:7
[INFO] [stdout]     |
[INFO] [stdout] 466 | const OFFICE_EXTENSION_TYPES: &'static [(OfficeDocType, &'static str)] = &[
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BYTES_REQUIRED_FOR_OFFICE_MAGIC` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:476:7
[INFO] [stdout]     |
[INFO] [stdout] 476 | const BYTES_REQUIRED_FOR_OFFICE_MAGIC: usize = 8;
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `OFFICE_MAGIC_NUMBERS` is never used
[INFO] [stdout]    --> src/mimesniffer/magic.rs:478:7
[INFO] [stdout]     |
[INFO] [stdout] 478 | const OFFICE_MAGIC_NUMBERS: &'static [Magic] = &[
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_office_mime_type` is never used
[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 `sniff_for_invalid_office_docs` is never used
[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 `sniff_for_office_docs` is never used
[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 `sniff_for_magic_numbers` is never used
[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: trait `MimeTypeSniffable` is never used
[INFO] [stdout]   --> src/mimesniffer/api.rs:24:11
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub trait MimeTypeSniffable {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SNIFFABLE_TYPES` is never used
[INFO] [stdout]   --> src/mimesniffer/api.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 | const SNIFFABLE_TYPES: &'static [&'static str] = &[
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mimesniffer/magic.rs:248:50
[INFO] [stdout]     |
[INFO] [stdout] 248 | pub fn sniff_mime_type_from_local_data<'a>(buf: &'a [u8]) -> Option<&str> {
[INFO] [stdout]     |                                                  ^^                 ---- the same lifetime is elided here
[INFO] [stdout]     |                                                  |
[INFO] [stdout]     |                                                  the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 248 | pub fn sniff_mime_type_from_local_data<'a>(buf: &'a [u8]) -> Option<&'a str> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `is_unknown_mime_type` and `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: unused imports: `MimeTypeSniffable` and `MimeTypeSniffer`
[INFO] [stdout]    --> src/mimesniffer/mod.rs:143:15
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub use api::{MimeTypeSniffable, MimeTypeSniffer, MimeTypeSnifferExt};
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/mimesniffer/magic.rs:1:17
[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: function `sniff_mime_type` is never used
[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_office_mime_type` is never used
[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: trait `MimeTypeSniffable` is never used
[INFO] [stdout]   --> src/mimesniffer/api.rs:24:11
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub trait MimeTypeSniffable {
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SNIFFABLE_TYPES` is never used
[INFO] [stdout]   --> src/mimesniffer/api.rs:54:7
[INFO] [stdout]    |
[INFO] [stdout] 54 | const SNIFFABLE_TYPES: &'static [&'static str] = &[
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/mimesniffer/magic.rs:248:50
[INFO] [stdout]     |
[INFO] [stdout] 248 | pub fn sniff_mime_type_from_local_data<'a>(buf: &'a [u8]) -> Option<&str> {
[INFO] [stdout]     |                                                  ^^                 ---- the same lifetime is elided here
[INFO] [stdout]     |                                                  |
[INFO] [stdout]     |                                                  the lifetime is named 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: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 248 | pub fn sniff_mime_type_from_local_data<'a>(buf: &'a [u8]) -> Option<&'a str> {
[INFO] [stdout]     |                                                                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "17fff106f8c194bceca50be4f80e026c43ae11460fc4556bd7f053e2dffabee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17fff106f8c194bceca50be4f80e026c43ae11460fc4556bd7f053e2dffabee8", kill_on_drop: false }`
[INFO] [stdout] 17fff106f8c194bceca50be4f80e026c43ae11460fc4556bd7f053e2dffabee8