[INFO] fetching crate feaders 0.2.0...
[INFO] checking feaders-0.2.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate feaders 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate feaders 0.2.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate feaders 0.2.0
[INFO] finished tweaking crates.io crate feaders 0.2.0
[INFO] tweaked toml for crates.io crate feaders 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.license_file
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thread-id v2.0.0
[INFO] [stderr]   Downloaded memchr v0.1.11
[INFO] [stderr]   Downloaded regex-syntax v0.3.9
[INFO] [stderr]   Downloaded threadpool v1.8.1
[INFO] [stderr]   Downloaded thread_local v0.2.7
[INFO] [stderr]   Downloaded getopts v0.2.21
[INFO] [stderr]   Downloaded utf8-ranges v0.1.3
[INFO] [stderr]   Downloaded yaml-rust v0.3.5
[INFO] [stderr]   Downloaded walkdir v0.1.8
[INFO] [stderr]   Downloaded regex v0.1.80
[INFO] [stderr]   Downloaded aho-corasick v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01c4ea88c89f00716a30bce5944b6f959c429742ae1d8841764f10040c1a2a83
[INFO] running `Command { std: "docker" "start" "-a" "01c4ea88c89f00716a30bce5944b6f959c429742ae1d8841764f10040c1a2a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01c4ea88c89f00716a30bce5944b6f959c429742ae1d8841764f10040c1a2a83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01c4ea88c89f00716a30bce5944b6f959c429742ae1d8841764f10040c1a2a83", kill_on_drop: false }`
[INFO] [stdout] 01c4ea88c89f00716a30bce5944b6f959c429742ae1d8841764f10040c1a2a83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d70c576f187b1691ef0aada115d413faae9b30dc80ec7018df8f062f598224d
[INFO] running `Command { std: "docker" "start" "-a" "3d70c576f187b1691ef0aada115d413faae9b30dc80ec7018df8f062f598224d", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.license_file
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking walkdir v0.1.8
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking feaders v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/hif/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         try!(f.read_to_string(&mut s));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:81:21
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let mut f = try!(File::open(&self.path));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:162:5
[INFO] [stdout]     |
[INFO] [stdout] 162 |     try!(f.read_to_string(&mut s));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |     let mut f = try!(File::open(file));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/hif/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `std` is imported redundantly
[INFO] [stdout]  --> src/utils.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std;
[INFO] [stdout]   |     ^^^ the item `std` is already imported by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         try!(f.read_to_string(&mut s));
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:81:21
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let mut f = try!(File::open(&self.path));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:162:5
[INFO] [stdout]     |
[INFO] [stdout] 162 |     try!(f.read_to_string(&mut s));
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:160:17
[INFO] [stdout]     |
[INFO] [stdout] 160 |     let mut f = try!(File::open(file));
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static of uninhabited type
[INFO] [stdout]      --> src/hif/libhif.rs:17047:5
[INFO] [stdout]       |
[INFO] [stdout] 17047 |     pub static mut _IO_2_1_stdin_: Struct__IO_FILE_plus;
[INFO] [stdout]       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]       |
[INFO] [stdout]       = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]       = note: for more information, see issue #74840 <https://github.com/rust-lang/rust/issues/74840>
[INFO] [stdout]       = note: uninhabited statics cannot be initialized, and any access would be an immediate error
[INFO] [stdout]       = note: `#[warn(uninhabited_static)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static of uninhabited type
[INFO] [stdout]      --> src/hif/libhif.rs:17048:5
[INFO] [stdout]       |
[INFO] [stdout] 17048 |     pub static mut _IO_2_1_stdout_: Struct__IO_FILE_plus;
[INFO] [stdout]       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]       |
[INFO] [stdout]       = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]       = note: for more information, see issue #74840 <https://github.com/rust-lang/rust/issues/74840>
[INFO] [stdout]       = note: uninhabited statics cannot be initialized, and any access would be an immediate error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static of uninhabited type
[INFO] [stdout]      --> src/hif/libhif.rs:17049:5
[INFO] [stdout]       |
[INFO] [stdout] 17049 |     pub static mut _IO_2_1_stderr_: Struct__IO_FILE_plus;
[INFO] [stdout]       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]       |
[INFO] [stdout]       = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]       = note: for more information, see issue #74840 <https://github.com/rust-lang/rust/issues/74840>
[INFO] [stdout]       = note: uninhabited statics cannot be initialized, and any access would be an immediate error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static of uninhabited type
[INFO] [stdout]      --> src/hif/libhif.rs:17047:5
[INFO] [stdout]       |
[INFO] [stdout] 17047 |     pub static mut _IO_2_1_stdin_: Struct__IO_FILE_plus;
[INFO] [stdout]       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]       |
[INFO] [stdout]       = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]       = note: for more information, see issue #74840 <https://github.com/rust-lang/rust/issues/74840>
[INFO] [stdout]       = note: uninhabited statics cannot be initialized, and any access would be an immediate error
[INFO] [stdout]       = note: `#[warn(uninhabited_static)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static of uninhabited type
[INFO] [stdout]      --> src/hif/libhif.rs:17048:5
[INFO] [stdout]       |
[INFO] [stdout] 17048 |     pub static mut _IO_2_1_stdout_: Struct__IO_FILE_plus;
[INFO] [stdout]       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]       |
[INFO] [stdout]       = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]       = note: for more information, see issue #74840 <https://github.com/rust-lang/rust/issues/74840>
[INFO] [stdout]       = note: uninhabited statics cannot be initialized, and any access would be an immediate error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static of uninhabited type
[INFO] [stdout]      --> src/hif/libhif.rs:17049:5
[INFO] [stdout]       |
[INFO] [stdout] 17049 |     pub static mut _IO_2_1_stderr_: Struct__IO_FILE_plus;
[INFO] [stdout]       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]       |
[INFO] [stdout]       = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]       = note: for more information, see issue #74840 <https://github.com/rust-lang/rust/issues/74840>
[INFO] [stdout]       = note: uninhabited statics cannot be initialized, and any access would be an immediate error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `&T`
[INFO] [stdout]   --> src/utils.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref = c.as_ref();
[INFO] [stdout]    |                     ^^^^^^     ------ type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `Component<'_>: AsRef<_>` found in the `std` crate:
[INFO] [stdout]            - impl AsRef<OsStr> for Component<'_>;
[INFO] [stdout]            - impl AsRef<Path> for Component<'_>;
[INFO] [stdout] help: consider giving `strref` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref: &T = c.as_ref();
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `&T`
[INFO] [stdout]   --> src/utils.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref = c.as_ref();
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout] 19 |
[INFO] [stdout] 20 |                 if strref == "." {
[INFO] [stdout]    |                           -- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `_: PartialEq<str>` found in the following crates: `alloc`, `core`, `std`:
[INFO] [stdout]            - impl PartialEq for str;
[INFO] [stdout]            - impl PartialEq<str> for OsStr;
[INFO] [stdout]            - impl PartialEq<str> for OsString;
[INFO] [stdout]            - impl<'a, 'b> PartialEq<str> for Cow<'a, str>;
[INFO] [stdout]            - impl<'a, 'b> PartialEq<str> for std::string::String;
[INFO] [stdout]    = note: required for `&_` to implement `PartialEq<&str>`
[INFO] [stdout] help: consider giving `strref` an explicit type, where the type for type parameter `A` is specified
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref: &T = c.as_ref();
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `&T`
[INFO] [stdout]   --> src/utils.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref = c.as_ref();
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |                 } else if strref == ".." {
[INFO] [stdout]    |                                  -- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `_: PartialEq<str>` found in the following crates: `alloc`, `core`, `std`:
[INFO] [stdout]            - impl PartialEq for str;
[INFO] [stdout]            - impl PartialEq<str> for OsStr;
[INFO] [stdout]            - impl PartialEq<str> for OsString;
[INFO] [stdout]            - impl<'a, 'b> PartialEq<str> for Cow<'a, str>;
[INFO] [stdout]            - impl<'a, 'b> PartialEq<str> for std::string::String;
[INFO] [stdout]    = note: required for `&_` to implement `PartialEq<&str>`
[INFO] [stdout] help: consider giving `strref` an explicit type, where the type for type parameter `A` is specified
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref: &T = c.as_ref();
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `&T`
[INFO] [stdout]   --> src/utils.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref = c.as_ref();
[INFO] [stdout]    |                     ^^^^^^     ------ type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `Component<'_>: AsRef<_>` found in the `std` crate:
[INFO] [stdout]            - impl AsRef<OsStr> for Component<'_>;
[INFO] [stdout]            - impl AsRef<Path> for Component<'_>;
[INFO] [stdout] help: consider giving `strref` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref: &T = c.as_ref();
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `&T`
[INFO] [stdout]   --> src/utils.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref = c.as_ref();
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout] 19 |
[INFO] [stdout] 20 |                 if strref == "." {
[INFO] [stdout]    |                           -- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `_: PartialEq<str>` found in the following crates: `alloc`, `core`, `std`:
[INFO] [stdout]            - impl PartialEq for str;
[INFO] [stdout]            - impl PartialEq<str> for OsStr;
[INFO] [stdout]            - impl PartialEq<str> for OsString;
[INFO] [stdout]            - impl<'a, 'b> PartialEq<str> for Cow<'a, str>;
[INFO] [stdout]            - impl<'a, 'b> PartialEq<str> for std::string::String;
[INFO] [stdout]    = note: required for `&_` to implement `PartialEq<&str>`
[INFO] [stdout] help: consider giving `strref` an explicit type, where the type for type parameter `A` is specified
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref: &T = c.as_ref();
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `&T`
[INFO] [stdout]   --> src/utils.rs:18:21
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref = c.as_ref();
[INFO] [stdout]    |                     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |                 } else if strref == ".." {
[INFO] [stdout]    |                                  -- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout]    = note: multiple `impl`s satisfying `_: PartialEq<str>` found in the following crates: `alloc`, `core`, `std`:
[INFO] [stdout]            - impl PartialEq for str;
[INFO] [stdout]            - impl PartialEq<str> for OsStr;
[INFO] [stdout]            - impl PartialEq<str> for OsString;
[INFO] [stdout]            - impl<'a, 'b> PartialEq<str> for Cow<'a, str>;
[INFO] [stdout]            - impl<'a, 'b> PartialEq<str> for std::string::String;
[INFO] [stdout]    = note: required for `&_` to implement `PartialEq<&str>`
[INFO] [stdout] help: consider giving `strref` an explicit type, where the type for type parameter `A` is specified
[INFO] [stdout]    |
[INFO] [stdout] 18 |                 let strref: &T = c.as_ref();
[INFO] [stdout]    |                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `feaders` (bin "feaders" test) due to 4 previous errors; 9 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `feaders` (bin "feaders") due to 4 previous errors; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3d70c576f187b1691ef0aada115d413faae9b30dc80ec7018df8f062f598224d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d70c576f187b1691ef0aada115d413faae9b30dc80ec7018df8f062f598224d", kill_on_drop: false }`
[INFO] [stdout] 3d70c576f187b1691ef0aada115d413faae9b30dc80ec7018df8f062f598224d
