[INFO] fetching crate ec4rs 1.2.0...
[INFO] fixing ec4rs-1.2.0 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=end=2015,2024 for pr-157817-2
[INFO] extracting crate ec4rs 1.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate ec4rs 1.2.0
[INFO] finished tweaking crates.io crate ec4rs 1.2.0
[INFO] tweaked toml for crates.io crate ec4rs 1.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ec4rs 1.2.0 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ec4rs 1.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c78947558ac73227571f5807d4fbb02bc3eaf666c5561820f22a349e89fcb8e7
[INFO] running `Command { std: "docker" "start" "c78947558ac73227571f5807d4fbb02bc3eaf666c5561820f22a349e89fcb8e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c78947558ac73227571f5807d4fbb02bc3eaf666c5561820f22a349e89fcb8e7" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c78947558ac73227571f5807d4fbb02bc3eaf666c5561820f22a349e89fcb8e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c78947558ac73227571f5807d4fbb02bc3eaf666c5561820f22a349e89fcb8e7" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=end=2015,2024", kill_on_drop: false }`
[INFO] [stderr] crater-edition-check: migrating to next edition
[INFO] [stderr]    Migrating Cargo.toml from 2021 edition to 2024
[INFO] [stderr]     Checking ec4rs v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Migrating src/lib.rs from 2021 edition to 2024
[INFO] [stdout] warning: cannot explicitly borrow within an implicitly-borrowing pattern in Rust 2024
[INFO] [stdout]   --> src/properties/iter.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 63 | impls! {Iter, &'a RawValue}
[INFO] [stdout]    | --------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/match-ergonomics.html>
[INFO] [stdout]    = note: `--force-warn rust-2024-incompatible-pat` implied by `--force-warn rust-2024-compatibility`
[INFO] [stdout]    = note: this warning originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let &(ref key, ref val) = pair;
[INFO] [stdout]    |                         +          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot explicitly borrow within an implicitly-borrowing pattern in Rust 2024
[INFO] [stdout]   --> src/properties/iter.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 63 | impls! {Iter, &'a RawValue}
[INFO] [stdout]    | --------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/match-ergonomics.html>
[INFO] [stdout]    = note: this warning originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let &(ref key, ref val) = pair;
[INFO] [stdout]    |                         +          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot explicitly borrow within an implicitly-borrowing pattern in Rust 2024
[INFO] [stdout]   --> src/properties/iter.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 68 | impls! {IterMut, &'a mut RawValue}
[INFO] [stdout]    | ---------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/match-ergonomics.html>
[INFO] [stdout]    = note: this warning originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let &mut (ref key, ref mut val) = pair;
[INFO] [stdout]    |                         ++++           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot explicitly borrow within an implicitly-borrowing pattern in Rust 2024
[INFO] [stdout]   --> src/properties/iter.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 68 | impls! {IterMut, &'a mut RawValue}
[INFO] [stdout]    | ---------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/match-ergonomics.html>
[INFO] [stdout]    = note: this warning originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let &mut (ref key, ref mut val) = pair;
[INFO] [stdout]    |                         ++++           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot explicitly borrow within an implicitly-borrowing pattern in Rust 2024
[INFO] [stdout]   --> src/properties/iter.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 63 | impls! {Iter, &'a RawValue}
[INFO] [stdout]    | --------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/match-ergonomics.html>
[INFO] [stdout]    = note: `--force-warn rust-2024-incompatible-pat` implied by `--force-warn rust-2024-compatibility`
[INFO] [stdout]    = note: this warning originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let &(ref key, ref val) = pair;
[INFO] [stdout]    |                         +          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot explicitly borrow within an implicitly-borrowing pattern in Rust 2024
[INFO] [stdout]   --> src/properties/iter.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 63 | impls! {Iter, &'a RawValue}
[INFO] [stdout]    | --------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/match-ergonomics.html>
[INFO] [stdout]    = note: this warning originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let &(ref key, ref val) = pair;
[INFO] [stdout]    |                         +          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] [stdout] warning: cannot explicitly borrow within an implicitly-borrowing pattern in Rust 2024
[INFO] [stdout]   --> src/properties/iter.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 68 | impls! {IterMut, &'a mut RawValue}
[INFO] [stdout]    | ---------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/match-ergonomics.html>
[INFO] [stdout]    = note: this warning originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let &mut (ref key, ref mut val) = pair;
[INFO] [stdout]    |                         ++++           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot explicitly borrow within an implicitly-borrowing pattern in Rust 2024
[INFO] [stdout]   --> src/properties/iter.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 68 | impls! {IterMut, &'a mut RawValue}
[INFO] [stdout]    | ---------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this changes meaning in Rust 2024
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2024/match-ergonomics.html>
[INFO] [stdout]    = note: this warning originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let &mut (ref key, ref mut val) = pair;
[INFO] [stdout]    |                         ++++           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] crater-edition-check: ec4rs v1.2.0 (/opt/rustwide/workdir) updating edition from 2021 to 2024
[INFO] [stderr]     Checking ec4rs v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `doc_unstable`
[INFO] [stdout]   --> src/lib.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![cfg_attr(doc_unstable, feature(doc_auto_cfg))]
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 32 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(doc_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(doc_unstable)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `doc_unstable`
[INFO] [stdout]   --> src/lib.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![cfg_attr(doc_unstable, feature(doc_auto_cfg))]
[INFO] [stdout]    |             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 32 more
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(doc_unstable)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(doc_unstable)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot explicitly borrow within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/properties/iter.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 63 | impls! {Iter, &'a RawValue}
[INFO] [stdout]    | --------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout]    = note: this error originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let &(ref key, ref val) = pair;
[INFO] [stdout]    |                         +          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot explicitly borrow within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/properties/iter.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 63 | impls! {Iter, &'a RawValue}
[INFO] [stdout]    | --------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout]    = note: this error originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let &(ref key, ref val) = pair;
[INFO] [stdout]    |                         +          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot explicitly borrow within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/properties/iter.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 68 | impls! {IterMut, &'a mut RawValue}
[INFO] [stdout]    | ---------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout]    = note: this error originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let &mut (ref key, ref mut val) = pair;
[INFO] [stdout]    |                         ++++           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot explicitly borrow within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/properties/iter.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 68 | impls! {IterMut, &'a mut RawValue}
[INFO] [stdout]    | ---------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout]    = note: this error originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let &mut (ref key, ref mut val) = pair;
[INFO] [stdout]    |                         ++++           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ec4rs` (lib) due to 4 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: cannot explicitly borrow within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/properties/iter.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 63 | impls! {Iter, &'a RawValue}
[INFO] [stdout]    | --------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout]    = note: this error originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let &(ref key, ref val) = pair;
[INFO] [stdout]    |                         +          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot explicitly borrow within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/properties/iter.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 63 | impls! {Iter, &'a RawValue}
[INFO] [stdout]    | --------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout]    = note: this error originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let &(ref key, ref val) = pair;
[INFO] [stdout]    |                         +          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot explicitly borrow within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/properties/iter.rs:15:26
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 68 | impls! {IterMut, &'a mut RawValue}
[INFO] [stdout]    | ---------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout]    = note: this error originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 15 |                     let &mut (ref key, ref mut val) = pair;
[INFO] [stdout]    |                         ++++           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot explicitly borrow within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/properties/iter.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let (ref key, val) = pair;
[INFO] [stdout]    |                          ^^^^^^^ occurs within macro expansion
[INFO] [stdout] ...
[INFO] [stdout] 68 | impls! {IterMut, &'a mut RawValue}
[INFO] [stdout]    | ---------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout]    = note: this error originates in the macro `impls` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: match on the reference with a reference pattern and borrow explicitly using a variable binding mode
[INFO] [stdout]    |
[INFO] [stdout] 43 |                     let &mut (ref key, ref mut val) = pair;
[INFO] [stdout]    |                         ++++           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ec4rs` (lib test) due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "c78947558ac73227571f5807d4fbb02bc3eaf666c5561820f22a349e89fcb8e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c78947558ac73227571f5807d4fbb02bc3eaf666c5561820f22a349e89fcb8e7", kill_on_drop: false }`
[INFO] [stdout] c78947558ac73227571f5807d4fbb02bc3eaf666c5561820f22a349e89fcb8e7
