[INFO] fetching crate mapped-file 0.0.8-r1...
[INFO] testing mapped-file-0.0.8-r1 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate mapped-file 0.0.8-r1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate mapped-file 0.0.8-r1
[INFO] finished tweaking crates.io crate mapped-file 0.0.8-r1
[INFO] tweaked toml for crates.io crate mapped-file 0.0.8-r1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mapped-file 0.0.8-r1 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 3 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b9158903496d45eb292359cba25a14c24146b0ae68b568b0d0dc108baf0e1b9b
[INFO] running `Command { std: "docker" "start" "-a" "b9158903496d45eb292359cba25a14c24146b0ae68b568b0d0dc108baf0e1b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9158903496d45eb292359cba25a14c24146b0ae68b568b0d0dc108baf0e1b9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9158903496d45eb292359cba25a14c24146b0ae68b568b0d0dc108baf0e1b9b", kill_on_drop: false }`
[INFO] [stdout] b9158903496d45eb292359cba25a14c24146b0ae68b568b0d0dc108baf0e1b9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ac1a7561bf5d35242720c4d196aa3660b9567b129d51acf09675065059967bf
[INFO] running `Command { std: "docker" "start" "-a" "0ac1a7561bf5d35242720c4d196aa3660b9567b129d51acf09675065059967bf", kill_on_drop: false }`
[INFO] [stderr]    Compiling mapped-file v0.0.8-r1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> src/hugetlb.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     path::{Path, PathBuf},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MFD_HUGETLB`
[INFO] [stdout]   --> src/file/memory.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     MFD_HUGETLB,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HugePage`
[INFO] [stdout]   --> src/file/memory.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     HugePage,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops`
[INFO] [stdout]  --> src/ring/buffer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     ops,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MaybeUninit`
[INFO] [stdout]   --> src/ext.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     MaybeUninit,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `defer`
[INFO] [stdout]   --> src/ext.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 | macro_rules! defer {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `opaque`
[INFO] [stdout]  --> src/err.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | macro_rules! opaque {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:327:3
[INFO] [stdout]     |
[INFO] [stdout] 326 |             todo!("We can't carry `pivots` over to return from this function; the data is needed for unmapping the ring...");
[INFO] [stdout]     |             ---------------------------------------------------------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 327 |         todo!("The mapping we'd be using is `root`. But we need to unmap `pivots` in reverse order when the returned `MappedFile` is dropped...")
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::panic::panic_2021` which comes from the expansion of the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pivots`
[INFO] [stdout]    --> src/lib.rs:312:7
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let pivots = {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_pivots`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_last_error` is never used
[INFO] [stdout]   --> src/ffi.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | / impl<'a, T> FFIError<'a, T>
[INFO] [stdout] 85 | | where FFIError<'a, T>: error::Error
[INFO] [stdout]    | |___________________________________- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 89 |       fn from_last_error(value: T, arguments: fmt::Arguments<'a>) -> Self
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_or_else` and `new_or` are never used
[INFO] [stdout]   --> src/file/raw.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl NonNegativeI32
[INFO] [stdout]    | ------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn new_or_else<F: FnOnce() -> Self>(raw: i32, f: F) -> Self
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn new_or(raw: i32, or: Self) -> Self
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_or_panic` is never used
[INFO] [stdout]   --> src/file/unmanaged.rs:27:25
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl UnmanagedFD {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub(super) const fn new_or_panic(raw: RawFd) -> Self
[INFO] [stdout]    |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deferred` is never constructed
[INFO] [stdout]   --> src/ext.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Deferred<F: ?Sized +  FnOnce() -> ()>(ManuallyDrop<F>);
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DeferredDrop` is never constructed
[INFO] [stdout]   --> src/ext.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct DeferredDrop<T, F: ?Sized + FnOnce(T) -> ()>(T, ManuallyDrop<F>);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_ptr` is never used
[INFO] [stdout]    --> src/uniq.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl<T> UniqueSlice<T>
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn get_ptr(&self) -> Option<NonNull<T>>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `first`, `last`, `first_mut`, `last_mut`, and `as_ptr_range` are never used
[INFO] [stdout]    --> src/uniq.rs:182:12
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<T> UniqueSlice<T>
[INFO] [stdout]     | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 182 |     pub fn first(&self) -> Option<&T>
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 191 |     pub fn last(&self) -> Option<&T>
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub fn first_mut(&mut self) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     pub fn last_mut(&mut self) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 220 |     pub const fn as_ptr_range(&self) -> std::ops::Range<*mut T>
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `requires_write_access` is never used
[INFO] [stdout]    --> src/flags.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl Flags
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub(super) const fn requires_write_access(&self) -> bool
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `open_rw` is never used
[INFO] [stdout]    --> src/flags.rs:143:25
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Perm
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub(super) const fn open_rw(&self, flags: Flags) -> (bool, bool)
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `r` is never used
[INFO] [stdout]    --> src/err.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn r<E: ?Sized + error::Error>(_: &E) {}
[INFO] [stdout]     |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]    --> src/err.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn test() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_os_error` is never used
[INFO] [stdout]    --> src/err.rs:129:19
[INFO] [stdout]     |
[INFO] [stdout] 122 | impl<E: fmt::Debug> WrappedOSError<E>
[INFO] [stdout]     | ------------------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 129 |     pub(crate) fn from_os_error(raw: c_int, ctx: E) -> Self
[INFO] [stdout]     |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "0ac1a7561bf5d35242720c4d196aa3660b9567b129d51acf09675065059967bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ac1a7561bf5d35242720c4d196aa3660b9567b129d51acf09675065059967bf", kill_on_drop: false }`
[INFO] [stdout] 0ac1a7561bf5d35242720c4d196aa3660b9567b129d51acf09675065059967bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39c913e49b3f624f25fe072eab7ebd5a679d3c2e103c64b2dd064681d2a24b0f
[INFO] running `Command { std: "docker" "start" "-a" "39c913e49b3f624f25fe072eab7ebd5a679d3c2e103c64b2dd064681d2a24b0f", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> src/hugetlb.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     path::{Path, PathBuf},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MFD_HUGETLB`
[INFO] [stdout]   --> src/file/memory.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     MFD_HUGETLB,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HugePage`
[INFO] [stdout]   --> src/file/memory.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     HugePage,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops`
[INFO] [stdout]  --> src/ring/buffer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     ops,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MaybeUninit`
[INFO] [stdout]   --> src/ext.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     MaybeUninit,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `defer`
[INFO] [stdout]   --> src/ext.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 | macro_rules! defer {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `opaque`
[INFO] [stdout]  --> src/err.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | macro_rules! opaque {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:327:3
[INFO] [stdout]     |
[INFO] [stdout] 326 |             todo!("We can't carry `pivots` over to return from this function; the data is needed for unmapping the ring...");
[INFO] [stdout]     |             ---------------------------------------------------------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 327 |         todo!("The mapping we'd be using is `root`. But we need to unmap `pivots` in reverse order when the returned `MappedFile` is dropped...")
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::panic::panic_2021` which comes from the expansion of the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pivots`
[INFO] [stdout]    --> src/lib.rs:312:7
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let pivots = {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_pivots`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_last_error` is never used
[INFO] [stdout]   --> src/ffi.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | / impl<'a, T> FFIError<'a, T>
[INFO] [stdout] 85 | | where FFIError<'a, T>: error::Error
[INFO] [stdout]    | |___________________________________- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 89 |       fn from_last_error(value: T, arguments: fmt::Arguments<'a>) -> Self
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_or_else` and `new_or` are never used
[INFO] [stdout]   --> src/file/raw.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl NonNegativeI32
[INFO] [stdout]    | ------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn new_or_else<F: FnOnce() -> Self>(raw: i32, f: F) -> Self
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn new_or(raw: i32, or: Self) -> Self
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_or_panic` is never used
[INFO] [stdout]   --> src/file/unmanaged.rs:27:25
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl UnmanagedFD {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub(super) const fn new_or_panic(raw: RawFd) -> Self
[INFO] [stdout]    |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deferred` is never constructed
[INFO] [stdout]   --> src/ext.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Deferred<F: ?Sized +  FnOnce() -> ()>(ManuallyDrop<F>);
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DeferredDrop` is never constructed
[INFO] [stdout]   --> src/ext.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct DeferredDrop<T, F: ?Sized + FnOnce(T) -> ()>(T, ManuallyDrop<F>);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_ptr` is never used
[INFO] [stdout]    --> src/uniq.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl<T> UniqueSlice<T>
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn get_ptr(&self) -> Option<NonNull<T>>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `first`, `last`, `first_mut`, `last_mut`, and `as_ptr_range` are never used
[INFO] [stdout]    --> src/uniq.rs:182:12
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<T> UniqueSlice<T>
[INFO] [stdout]     | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 182 |     pub fn first(&self) -> Option<&T>
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 191 |     pub fn last(&self) -> Option<&T>
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub fn first_mut(&mut self) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     pub fn last_mut(&mut self) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 220 |     pub const fn as_ptr_range(&self) -> std::ops::Range<*mut T>
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `requires_write_access` is never used
[INFO] [stdout]    --> src/flags.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl Flags
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub(super) const fn requires_write_access(&self) -> bool
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `open_rw` is never used
[INFO] [stdout]    --> src/flags.rs:143:25
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Perm
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub(super) const fn open_rw(&self, flags: Flags) -> (bool, bool)
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `r` is never used
[INFO] [stdout]    --> src/err.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn r<E: ?Sized + error::Error>(_: &E) {}
[INFO] [stdout]     |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]    --> src/err.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn test() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_os_error` is never used
[INFO] [stdout]    --> src/err.rs:129:19
[INFO] [stdout]     |
[INFO] [stdout] 122 | impl<E: fmt::Debug> WrappedOSError<E>
[INFO] [stdout]     | ------------------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 129 |     pub(crate) fn from_os_error(raw: c_int, ctx: E) -> Self
[INFO] [stdout]     |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mapped-file v0.0.8-r1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `PathBuf`
[INFO] [stdout]  --> src/hugetlb.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     path::{Path, PathBuf},
[INFO] [stdout]   |                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MFD_HUGETLB`
[INFO] [stdout]   --> src/file/memory.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     MFD_HUGETLB,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HugePage`
[INFO] [stdout]   --> src/file/memory.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     HugePage,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops`
[INFO] [stdout]  --> src/ring/buffer.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     ops,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MaybeUninit`
[INFO] [stdout]   --> src/ext.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     MaybeUninit,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `defer`
[INFO] [stdout]   --> src/ext.rs:15:14
[INFO] [stdout]    |
[INFO] [stdout] 15 | macro_rules! defer {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `opaque`
[INFO] [stdout]  --> src/err.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 | macro_rules! opaque {
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/lib.rs:327:3
[INFO] [stdout]     |
[INFO] [stdout] 326 |             todo!("We can't carry `pivots` over to return from this function; the data is needed for unmapping the ring...");
[INFO] [stdout]     |             ---------------------------------------------------------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 327 |         todo!("The mapping we'd be using is `root`. But we need to unmap `pivots` in reverse order when the returned `MappedFile` is dropped...")
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]     = note: this warning originates in the macro `$crate::panic::panic_2021` which comes from the expansion of the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pivots`
[INFO] [stdout]    --> src/lib.rs:312:7
[INFO] [stdout]     |
[INFO] [stdout] 312 |         let pivots = {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_pivots`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_last_error` is never used
[INFO] [stdout]   --> src/ffi.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 84 | / impl<'a, T> FFIError<'a, T>
[INFO] [stdout] 85 | | where FFIError<'a, T>: error::Error
[INFO] [stdout]    | |___________________________________- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 89 |       fn from_last_error(value: T, arguments: fmt::Arguments<'a>) -> Self
[INFO] [stdout]    |          ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new_or_else` and `new_or` are never used
[INFO] [stdout]   --> src/file/raw.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl NonNegativeI32
[INFO] [stdout]    | ------------------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn new_or_else<F: FnOnce() -> Self>(raw: i32, f: F) -> Self
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn new_or(raw: i32, or: Self) -> Self
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_or_panic` is never used
[INFO] [stdout]   --> src/file/unmanaged.rs:27:25
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl UnmanagedFD {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub(super) const fn new_or_panic(raw: RawFd) -> Self
[INFO] [stdout]    |                         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deferred` is never constructed
[INFO] [stdout]   --> src/ext.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Deferred<F: ?Sized +  FnOnce() -> ()>(ManuallyDrop<F>);
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DeferredDrop` is never constructed
[INFO] [stdout]   --> src/ext.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct DeferredDrop<T, F: ?Sized + FnOnce(T) -> ()>(T, ManuallyDrop<F>);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_ptr` is never used
[INFO] [stdout]    --> src/uniq.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl<T> UniqueSlice<T>
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 134 |     pub fn get_ptr(&self) -> Option<NonNull<T>>
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `first`, `last`, `first_mut`, `last_mut`, and `as_ptr_range` are never used
[INFO] [stdout]    --> src/uniq.rs:182:12
[INFO] [stdout]     |
[INFO] [stdout] 144 | impl<T> UniqueSlice<T>
[INFO] [stdout]     | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 182 |     pub fn first(&self) -> Option<&T>
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 191 |     pub fn last(&self) -> Option<&T>
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub fn first_mut(&mut self) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     pub fn last_mut(&mut self) -> Option<&mut T>
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 220 |     pub const fn as_ptr_range(&self) -> std::ops::Range<*mut T>
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `requires_write_access` is never used
[INFO] [stdout]    --> src/flags.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl Flags
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub(super) const fn requires_write_access(&self) -> bool
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `open_rw` is never used
[INFO] [stdout]    --> src/flags.rs:143:25
[INFO] [stdout]     |
[INFO] [stdout] 126 | impl Perm
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub(super) const fn open_rw(&self, flags: Flags) -> (bool, bool)
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `r` is never used
[INFO] [stdout]    --> src/err.rs:112:8
[INFO] [stdout]     |
[INFO] [stdout] 112 |     fn r<E: ?Sized + error::Error>(_: &E) {}
[INFO] [stdout]     |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]    --> src/err.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn test() {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_os_error` is never used
[INFO] [stdout]    --> src/err.rs:129:19
[INFO] [stdout]     |
[INFO] [stdout] 122 | impl<E: fmt::Debug> WrappedOSError<E>
[INFO] [stdout]     | ------------------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 129 |     pub(crate) fn from_os_error(raw: c_int, ctx: E) -> Self
[INFO] [stdout]     |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "39c913e49b3f624f25fe072eab7ebd5a679d3c2e103c64b2dd064681d2a24b0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39c913e49b3f624f25fe072eab7ebd5a679d3c2e103c64b2dd064681d2a24b0f", kill_on_drop: false }`
[INFO] [stdout] 39c913e49b3f624f25fe072eab7ebd5a679d3c2e103c64b2dd064681d2a24b0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 107a6cd5e6459efb08d5c0906e4245606266d865e5cad78a26fce96aedd34a8e
[INFO] running `Command { std: "docker" "start" "-a" "107a6cd5e6459efb08d5c0906e4245606266d865e5cad78a26fce96aedd34a8e", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `PathBuf`
[INFO] [stderr]  --> src/hugetlb.rs:8:18
[INFO] [stderr]   |
[INFO] [stderr] 8 |     path::{Path, PathBuf},
[INFO] [stderr]   |                  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MFD_HUGETLB`
[INFO] [stderr]   --> src/file/memory.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     MFD_HUGETLB,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `HugePage`
[INFO] [stderr]   --> src/file/memory.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     HugePage,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ops`
[INFO] [stderr]  --> src/ring/buffer.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     ops,
[INFO] [stderr]   |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MaybeUninit`
[INFO] [stderr]   --> src/ext.rs:10:2
[INFO] [stderr]    |
[INFO] [stderr] 10 |     MaybeUninit,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition: `defer`
[INFO] [stderr]   --> src/ext.rs:15:14
[INFO] [stderr]    |
[INFO] [stderr] 15 | macro_rules! defer {
[INFO] [stderr]    |              ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition: `opaque`
[INFO] [stderr]  --> src/err.rs:8:14
[INFO] [stderr]   |
[INFO] [stderr] 8 | macro_rules! opaque {
[INFO] [stderr]   |              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/lib.rs:327:3
[INFO] [stderr]     |
[INFO] [stderr] 326 |             todo!("We can't carry `pivots` over to return from this function; the data is needed for unmapping the ring...");
[INFO] [stderr]     |             ---------------------------------------------------------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 327 |         todo!("The mapping we'd be using is `root`. But we need to unmap `pivots` in reverse order when the returned `MappedFile` is dropped...")
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable expression
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr]     = note: this warning originates in the macro `$crate::panic::panic_2021` which comes from the expansion of the macro `todo` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pivots`
[INFO] [stderr]    --> src/lib.rs:312:7
[INFO] [stderr]     |
[INFO] [stderr] 312 |         let pivots = {
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_pivots`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `from_last_error` is never used
[INFO] [stderr]   --> src/ffi.rs:89:8
[INFO] [stderr]    |
[INFO] [stderr] 84 | / impl<'a, T> FFIError<'a, T>
[INFO] [stderr] 85 | | where FFIError<'a, T>: error::Error
[INFO] [stderr]    | |___________________________________- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 89 |       fn from_last_error(value: T, arguments: fmt::Arguments<'a>) -> Self
[INFO] [stderr]    |          ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated functions `new_or_else` and `new_or` are never used
[INFO] [stderr]   --> src/file/raw.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | impl NonNegativeI32
[INFO] [stderr]    | ------------------- associated functions in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 22 |     pub fn new_or_else<F: FnOnce() -> Self>(raw: i32, f: F) -> Self
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 27 |     pub fn new_or(raw: i32, or: Self) -> Self
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new_or_panic` is never used
[INFO] [stderr]   --> src/file/unmanaged.rs:27:25
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl UnmanagedFD {
[INFO] [stderr]    | ---------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 27 |     pub(super) const fn new_or_panic(raw: RawFd) -> Self
[INFO] [stderr]    |                         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Deferred` is never constructed
[INFO] [stderr]   --> src/ext.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 | pub struct Deferred<F: ?Sized +  FnOnce() -> ()>(ManuallyDrop<F>);
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `DeferredDrop` is never constructed
[INFO] [stderr]   --> src/ext.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub struct DeferredDrop<T, F: ?Sized + FnOnce(T) -> ()>(T, ManuallyDrop<F>);
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `get_ptr` is never used
[INFO] [stderr]    --> src/uniq.rs:134:12
[INFO] [stderr]     |
[INFO] [stderr] 126 | impl<T> UniqueSlice<T>
[INFO] [stderr]     | ---------------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 134 |     pub fn get_ptr(&self) -> Option<NonNull<T>>
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `first`, `last`, `first_mut`, `last_mut`, and `as_ptr_range` are never used
[INFO] [stderr]    --> src/uniq.rs:182:12
[INFO] [stderr]     |
[INFO] [stderr] 144 | impl<T> UniqueSlice<T>
[INFO] [stderr]     | ---------------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 182 |     pub fn first(&self) -> Option<&T>
[INFO] [stderr]     |            ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 191 |     pub fn last(&self) -> Option<&T>
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 200 |     pub fn first_mut(&mut self) -> Option<&mut T>
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 209 |     pub fn last_mut(&mut self) -> Option<&mut T>
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 220 |     pub const fn as_ptr_range(&self) -> std::ops::Range<*mut T>
[INFO] [stderr]     |                  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `requires_write_access` is never used
[INFO] [stderr]    --> src/flags.rs:117:25
[INFO] [stderr]     |
[INFO] [stderr] 102 | impl Flags
[INFO] [stderr]     | ---------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 117 |     pub(super) const fn requires_write_access(&self) -> bool
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `open_rw` is never used
[INFO] [stderr]    --> src/flags.rs:143:25
[INFO] [stderr]     |
[INFO] [stderr] 126 | impl Perm
[INFO] [stderr]     | --------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 143 |     pub(super) const fn open_rw(&self, flags: Flags) -> (bool, bool)
[INFO] [stderr]     |                         ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `r` is never used
[INFO] [stderr]    --> src/err.rs:112:8
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn r<E: ?Sized + error::Error>(_: &E) {}
[INFO] [stderr]     |        ^
[INFO] [stderr] 
[INFO] [stderr] warning: function `test` is never used
[INFO] [stderr]    --> src/err.rs:113:8
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn test() {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `from_os_error` is never used
[INFO] [stderr]    --> src/err.rs:129:19
[INFO] [stderr]     |
[INFO] [stderr] 122 | impl<E: fmt::Debug> WrappedOSError<E>
[INFO] [stderr]     | ------------------------------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 129 |     pub(crate) fn from_os_error(raw: c_int, ctx: E) -> Self
[INFO] [stderr]     |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `mapped-file` (lib) generated 21 warnings (run `cargo fix --lib -p mapped-file` to apply 5 suggestions)
[INFO] [stderr] warning: `mapped-file` (lib test) generated 21 warnings (21 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mapped_file-b37bbf0c55043a5d)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test file::tests::std_in_out_err_fileno ... ok
[INFO] [stdout] test file::tests::test_readwrite ... ok
[INFO] [stdout] test file::memory::test::default_flag_cloexec_visible ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests mapped_file
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "107a6cd5e6459efb08d5c0906e4245606266d865e5cad78a26fce96aedd34a8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "107a6cd5e6459efb08d5c0906e4245606266d865e5cad78a26fce96aedd34a8e", kill_on_drop: false }`
[INFO] [stdout] 107a6cd5e6459efb08d5c0906e4245606266d865e5cad78a26fce96aedd34a8e