[INFO] fetching crate oprec 0.1.0...
[INFO] testing oprec-0.1.0 against beta-2021-08-01 for beta-1.55-1
[INFO] extracting crate oprec 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate oprec 0.1.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate oprec 0.1.0
[INFO] finished tweaking crates.io crate oprec 0.1.0
[INFO] tweaked toml for crates.io crate oprec 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d71e05b42069dcb5aa6901c0bc4be0ce6e517ed8398ea0288fd54a952ed44aa1
[INFO] running `Command { std: "docker" "start" "-a" "d71e05b42069dcb5aa6901c0bc4be0ce6e517ed8398ea0288fd54a952ed44aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d71e05b42069dcb5aa6901c0bc4be0ce6e517ed8398ea0288fd54a952ed44aa1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d71e05b42069dcb5aa6901c0bc4be0ce6e517ed8398ea0288fd54a952ed44aa1", kill_on_drop: false }`
[INFO] [stdout] d71e05b42069dcb5aa6901c0bc4be0ce6e517ed8398ea0288fd54a952ed44aa1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1cf31c6dc19753e2793a83756b8b48b718cad6da0a8d002255dcfa318e79508f
[INFO] running `Command { std: "docker" "start" "-a" "1cf31c6dc19753e2793a83756b8b48b718cad6da0a8d002255dcfa318e79508f", kill_on_drop: false }`
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling oprec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:240:34
[INFO] [stdout]     |
[INFO] [stdout] 240 |     pub fn functify(self) -> Box<Fn(HashMap<u64, f64>) -> Result<f64, u64>> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> Result<f64, u64>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:69:55
[INFO] [stdout]     |
[INFO] [stdout] 69  |               fn is_oprec_method(g: &Ops) -> Result<Box<Fn(f64) -> f64>, Ops> {
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] ...
[INFO] [stdout] 331 | / impl_oprec_method!(
[INFO] [stdout] 332 | |     (sin, Sin), (cos, Cos), (tan, Tan), 
[INFO] [stdout] 333 | |     (asin, Asin), (acos, Acos), (atan, Atan),
[INFO] [stdout] 334 | |     (sinh, Sinh), (cosh, Cosh), (tanh, Tanh),
[INFO] [stdout] ...   |
[INFO] [stdout] 337 | |     (exp, Exp), (ln, Ln), (abs, Abs)
[INFO] [stdout] 338 | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in the macro `impl_oprec_method_intermediate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:340:63
[INFO] [stdout]     |
[INFO] [stdout] 340 | fn oprec_to_function_check(x: &OpRec, last: NodeIndex) -> Box<Fn(HashMap<u64, f64>) -> Result<f64, u64>> {
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> Result<f64, u64>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:352:59
[INFO] [stdout]     |
[INFO] [stdout] 352 | fn oprec_to_function(rec: &OpRec, last: NodeIndex) -> Box<Fn(HashMap<u64, f64>) -> f64> {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> f64`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.80s
[INFO] running `Command { std: "docker" "inspect" "1cf31c6dc19753e2793a83756b8b48b718cad6da0a8d002255dcfa318e79508f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1cf31c6dc19753e2793a83756b8b48b718cad6da0a8d002255dcfa318e79508f", kill_on_drop: false }`
[INFO] [stdout] 1cf31c6dc19753e2793a83756b8b48b718cad6da0a8d002255dcfa318e79508f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 443e9fb92121cd754c905ec1f65cc3226b75a484233522a7ba0e05faec0be0ee
[INFO] running `Command { std: "docker" "start" "-a" "443e9fb92121cd754c905ec1f65cc3226b75a484233522a7ba0e05faec0be0ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling oprec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:240:34
[INFO] [stdout]     |
[INFO] [stdout] 240 |     pub fn functify(self) -> Box<Fn(HashMap<u64, f64>) -> Result<f64, u64>> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> Result<f64, u64>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:69:55
[INFO] [stdout]     |
[INFO] [stdout] 69  |               fn is_oprec_method(g: &Ops) -> Result<Box<Fn(f64) -> f64>, Ops> {
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] ...
[INFO] [stdout] 331 | / impl_oprec_method!(
[INFO] [stdout] 332 | |     (sin, Sin), (cos, Cos), (tan, Tan), 
[INFO] [stdout] 333 | |     (asin, Asin), (acos, Acos), (atan, Atan),
[INFO] [stdout] 334 | |     (sinh, Sinh), (cosh, Cosh), (tanh, Tanh),
[INFO] [stdout] ...   |
[INFO] [stdout] 337 | |     (exp, Exp), (ln, Ln), (abs, Abs)
[INFO] [stdout] 338 | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in the macro `impl_oprec_method_intermediate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:340:63
[INFO] [stdout]     |
[INFO] [stdout] 340 | fn oprec_to_function_check(x: &OpRec, last: NodeIndex) -> Box<Fn(HashMap<u64, f64>) -> Result<f64, u64>> {
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> Result<f64, u64>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:352:59
[INFO] [stdout]     |
[INFO] [stdout] 352 | fn oprec_to_function(rec: &OpRec, last: NodeIndex) -> Box<Fn(HashMap<u64, f64>) -> f64> {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> f64`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:240:34
[INFO] [stdout]     |
[INFO] [stdout] 240 |     pub fn functify(self) -> Box<Fn(HashMap<u64, f64>) -> Result<f64, u64>> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> Result<f64, u64>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:69:55
[INFO] [stdout]     |
[INFO] [stdout] 69  |               fn is_oprec_method(g: &Ops) -> Result<Box<Fn(f64) -> f64>, Ops> {
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] ...
[INFO] [stdout] 331 | / impl_oprec_method!(
[INFO] [stdout] 332 | |     (sin, Sin), (cos, Cos), (tan, Tan), 
[INFO] [stdout] 333 | |     (asin, Asin), (acos, Acos), (atan, Atan),
[INFO] [stdout] 334 | |     (sinh, Sinh), (cosh, Cosh), (tanh, Tanh),
[INFO] [stdout] ...   |
[INFO] [stdout] 337 | |     (exp, Exp), (ln, Ln), (abs, Abs)
[INFO] [stdout] 338 | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout]     = note: this warning originates in the macro `impl_oprec_method_intermediate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:340:63
[INFO] [stdout]     |
[INFO] [stdout] 340 | fn oprec_to_function_check(x: &OpRec, last: NodeIndex) -> Box<Fn(HashMap<u64, f64>) -> Result<f64, u64>> {
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> Result<f64, u64>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:352:59
[INFO] [stdout]     |
[INFO] [stdout] 352 | fn oprec_to_function(rec: &OpRec, last: NodeIndex) -> Box<Fn(HashMap<u64, f64>) -> f64> {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> f64`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "443e9fb92121cd754c905ec1f65cc3226b75a484233522a7ba0e05faec0be0ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "443e9fb92121cd754c905ec1f65cc3226b75a484233522a7ba0e05faec0be0ee", kill_on_drop: false }`
[INFO] [stdout] 443e9fb92121cd754c905ec1f65cc3226b75a484233522a7ba0e05faec0be0ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2e0234910d8fcf45e1bc8efe9319d83778337bb4a5e5c1d846589596cd9ef874
[INFO] running `Command { std: "docker" "start" "-a" "2e0234910d8fcf45e1bc8efe9319d83778337bb4a5e5c1d846589596cd9ef874", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:240:34
[INFO] [stderr]     |
[INFO] [stderr] 240 |     pub fn functify(self) -> Box<Fn(HashMap<u64, f64>) -> Result<f64, u64>> {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> Result<f64, u64>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:69:55
[INFO] [stderr]     |
[INFO] [stderr] 69  |               fn is_oprec_method(g: &Ops) -> Result<Box<Fn(f64) -> f64>, Ops> {
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stderr] ...
[INFO] [stderr] 331 | / impl_oprec_method!(
[INFO] [stderr] 332 | |     (sin, Sin), (cos, Cos), (tan, Tan), 
[INFO] [stderr] 333 | |     (asin, Asin), (acos, Acos), (atan, Atan),
[INFO] [stderr] 334 | |     (sinh, Sinh), (cosh, Cosh), (tanh, Tanh),
[INFO] [stderr] ...   |
[INFO] [stderr] 337 | |     (exp, Exp), (ln, Ln), (abs, Abs)
[INFO] [stderr] 338 | | );
[INFO] [stderr]     | |__- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr]     = note: this warning originates in the macro `impl_oprec_method_intermediate` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:340:63
[INFO] [stderr]     |
[INFO] [stderr] 340 | fn oprec_to_function_check(x: &OpRec, last: NodeIndex) -> Box<Fn(HashMap<u64, f64>) -> Result<f64, u64>> {
[INFO] [stderr]     |                                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> Result<f64, u64>`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:352:59
[INFO] [stderr]     |
[INFO] [stderr] 352 | fn oprec_to_function(rec: &OpRec, last: NodeIndex) -> Box<Fn(HashMap<u64, f64>) -> f64> {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(HashMap<u64, f64>) -> f64`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `oprec` (lib) generated 4 warnings
[INFO] [stderr] warning: `oprec` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/oprec-b5107b1d72832b5e)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests oprec
[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] [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" "2e0234910d8fcf45e1bc8efe9319d83778337bb4a5e5c1d846589596cd9ef874", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e0234910d8fcf45e1bc8efe9319d83778337bb4a5e5c1d846589596cd9ef874", kill_on_drop: false }`
[INFO] [stdout] 2e0234910d8fcf45e1bc8efe9319d83778337bb4a5e5c1d846589596cd9ef874
