[INFO] fetching crate lavish-compiler 0.4.0...
[INFO] checking lavish-compiler-0.4.0 against master#df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e for pr-95474
[INFO] extracting crate lavish-compiler 0.4.0 into /workspace/builds/worker-41/source
[INFO] validating manifest of crates.io crate lavish-compiler 0.4.0 on toolchain df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lavish-compiler 0.4.0
[INFO] finished tweaking crates.io crate lavish-compiler 0.4.0
[INFO] tweaked toml for crates.io crate lavish-compiler 0.4.0 written to /workspace/builds/worker-41/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vte v0.10.1
[INFO] [stderr]   Downloaded utf8parse v0.2.0
[INFO] [stderr]   Downloaded netbuf v0.4.1
[INFO] [stderr]   Downloaded vte_generate_state_changes v0.1.1
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[INFO] [stderr]   Downloaded colored v1.9.3
[INFO] [stderr]   Downloaded env_logger v0.6.2
[INFO] [stderr]   Downloaded lexical-core v0.7.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a3554a352aa41691c6c2cb807751b11ec3e54db649589fabb13281f3ff812c6
[INFO] running `Command { std: "docker" "start" "-a" "6a3554a352aa41691c6c2cb807751b11ec3e54db649589fabb13281f3ff812c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a3554a352aa41691c6c2cb807751b11ec3e54db649589fabb13281f3ff812c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a3554a352aa41691c6c2cb807751b11ec3e54db649589fabb13281f3ff812c6", kill_on_drop: false }`
[INFO] [stdout] 6a3554a352aa41691c6c2cb807751b11ec3e54db649589fabb13281f3ff812c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+df20355fa9fa5e9fb89be4e4bfee8a643bb7a23e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96f9dd9f3fa9699c524e2184b859c20ed0edc53b00c6597185fc7232a9388c0e
[INFO] running `Command { std: "docker" "start" "-a" "96f9dd9f3fa9699c524e2184b859c20ed0edc53b00c6597185fc7232a9388c0e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking cfg-if v1.0.0
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[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]    Compiling vte_generate_state_changes v0.1.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking vte v0.10.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking strip-ansi-escapes v0.1.1
[INFO] [stderr]     Checking lavish-compiler v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codegen/output.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |     writer: &'a mut fmt::Write,
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 -     writer: &'a mut fmt::Write,
[INFO] [stdout] 35 +     writer: &'a mut dyn fmt::Write,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codegen/output.rs:35:21
[INFO] [stdout]    |
[INFO] [stdout] 35 |     writer: &'a mut fmt::Write,
[INFO] [stdout]    |                     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 -     writer: &'a mut fmt::Write,
[INFO] [stdout] 35 +     writer: &'a mut dyn fmt::Write,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codegen/rust/ir/lang.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 |     body: Option<Box<Fn(&mut Scope) + 'a>>,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 -     body: Option<Box<Fn(&mut Scope) + 'a>>,
[INFO] [stdout] 45 +     body: Option<Box<dyn Fn(&mut Scope) + 'a>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codegen/rust/ir/lang.rs:193:22
[INFO] [stdout]     |
[INFO] [stdout] 193 |     body: Option<Box<Fn(&mut Scope) + 'a>>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 193 -     body: Option<Box<Fn(&mut Scope) + 'a>>,
[INFO] [stdout] 193 +     body: Option<Box<dyn Fn(&mut Scope) + 'a>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/anchored.rs:89:32
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub(crate) frames: Vec<&'a Frame>,
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 89 -     pub(crate) frames: Vec<&'a Frame>,
[INFO] [stdout] 89 +     pub(crate) frames: Vec<&'a dyn Frame>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/anchored.rs:94:27
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn new(frame: &'a Frame) -> Self {
[INFO] [stdout]    |                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 -     pub fn new(frame: &'a Frame) -> Self {
[INFO] [stdout] 94 +     pub fn new(frame: &'a dyn Frame) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:100:35
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn push(&self, frame: &'a Frame) -> Self {
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     pub fn push(&self, frame: &'a Frame) -> Self {
[INFO] [stdout] 100 +     pub fn push(&self, frame: &'a dyn Frame) -> Self {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:274:41
[INFO] [stdout]     |
[INFO] [stdout] 274 |     pub fn for_each_fun(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 274 -     pub fn for_each_fun(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout] 274 +     pub fn for_each_fun(&self, cb: &mut dyn FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:280:44
[INFO] [stdout]     |
[INFO] [stdout] 280 |     pub fn for_each_struct(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 280 -     pub fn for_each_struct(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout] 280 +     pub fn for_each_struct(&self, cb: &mut dyn FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:286:42
[INFO] [stdout]     |
[INFO] [stdout] 286 |     pub fn for_each_enum(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 286 -     pub fn for_each_enum(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout] 286 +     pub fn for_each_enum(&self, cb: &mut dyn FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:292:47
[INFO] [stdout]     |
[INFO] [stdout] 292 |     pub fn for_each_namespace(&self, cb: &mut FnMut(Anchored<&NamespaceBody>)) {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 292 -     pub fn for_each_namespace(&self, cb: &mut FnMut(Anchored<&NamespaceBody>)) {
[INFO] [stdout] 292 +     pub fn for_each_namespace(&self, cb: &mut dyn FnMut(Anchored<&NamespaceBody>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:298:51
[INFO] [stdout]     |
[INFO] [stdout] 298 |     pub fn for_each_fun_of_schema(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 298 -     pub fn for_each_fun_of_schema(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout] 298 +     pub fn for_each_fun_of_schema(&self, cb: &mut dyn FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:306:54
[INFO] [stdout]     |
[INFO] [stdout] 306 |     pub fn for_each_struct_of_schema(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 306 -     pub fn for_each_struct_of_schema(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout] 306 +     pub fn for_each_struct_of_schema(&self, cb: &mut dyn FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:316:52
[INFO] [stdout]     |
[INFO] [stdout] 316 |     pub fn for_each_enum_of_schema(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 316 -     pub fn for_each_enum_of_schema(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout] 316 +     pub fn for_each_enum_of_schema(&self, cb: &mut dyn FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:332:51
[INFO] [stdout]     |
[INFO] [stdout] 332 |     pub fn for_each_fun_of_schema(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 332 -     pub fn for_each_fun_of_schema(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout] 332 +     pub fn for_each_fun_of_schema(&self, cb: &mut dyn FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:341:54
[INFO] [stdout]     |
[INFO] [stdout] 341 |     pub fn for_each_struct_of_schema(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 341 -     pub fn for_each_struct_of_schema(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout] 341 +     pub fn for_each_struct_of_schema(&self, cb: &mut dyn FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:350:52
[INFO] [stdout]     |
[INFO] [stdout] 350 |     pub fn for_each_enum_of_schema(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 350 -     pub fn for_each_enum_of_schema(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout] 350 +     pub fn for_each_enum_of_schema(&self, cb: &mut dyn FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codegen/output.rs:47:32
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn new(writer: &'a mut fmt::Write) -> Self {
[INFO] [stdout]    |                                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 -     pub fn new(writer: &'a mut fmt::Write) -> Self {
[INFO] [stdout] 47 +     pub fn new(writer: &'a mut dyn fmt::Write) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codegen/output.rs:120:35
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn fmt<F>(writer: &'a mut fmt::Write, f: F) -> std::fmt::Result
[INFO] [stdout]     |                                   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 120 -     pub fn fmt<F>(writer: &'a mut fmt::Write, f: F) -> std::fmt::Result
[INFO] [stdout] 120 +     pub fn fmt<F>(writer: &'a mut dyn fmt::Write, f: F) -> std::fmt::Result
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codegen/rust/ir/protocol.rs:193:37
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn for_each_fun(&self, cb: &mut FnMut(ast::Anchored<&ast::FunctionDecl>)) {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 193 -     fn for_each_fun(&self, cb: &mut FnMut(ast::Anchored<&ast::FunctionDecl>)) {
[INFO] [stdout] 193 +     fn for_each_fun(&self, cb: &mut dyn FnMut(ast::Anchored<&ast::FunctionDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/codegen/rust/ir/types.rs:5:64
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<fmt::Display + 'a>;
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<fmt::Display + 'a>;
[INFO] [stdout] 5 +     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<dyn fmt::Display + 'a>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codegen/rust/ir/types.rs:11:64
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<fmt::Display + 'a> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<fmt::Display + 'a> {
[INFO] [stdout] 11 +     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<dyn fmt::Display + 'a> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codegen/rust/ir/lang.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 |     body: Option<Box<Fn(&mut Scope) + 'a>>,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 -     body: Option<Box<Fn(&mut Scope) + 'a>>,
[INFO] [stdout] 45 +     body: Option<Box<dyn Fn(&mut Scope) + 'a>>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codegen/rust/ir/lang.rs:193:22
[INFO] [stdout]     |
[INFO] [stdout] 193 |     body: Option<Box<Fn(&mut Scope) + 'a>>,
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 193 -     body: Option<Box<Fn(&mut Scope) + 'a>>,
[INFO] [stdout] 193 +     body: Option<Box<dyn Fn(&mut Scope) + 'a>>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/anchored.rs:89:32
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub(crate) frames: Vec<&'a Frame>,
[INFO] [stdout]    |                                ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 89 -     pub(crate) frames: Vec<&'a Frame>,
[INFO] [stdout] 89 +     pub(crate) frames: Vec<&'a dyn Frame>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ast/anchored.rs:94:27
[INFO] [stdout]    |
[INFO] [stdout] 94 |     pub fn new(frame: &'a Frame) -> Self {
[INFO] [stdout]    |                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 -     pub fn new(frame: &'a Frame) -> Self {
[INFO] [stdout] 94 +     pub fn new(frame: &'a dyn Frame) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:100:35
[INFO] [stdout]     |
[INFO] [stdout] 100 |     pub fn push(&self, frame: &'a Frame) -> Self {
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 100 -     pub fn push(&self, frame: &'a Frame) -> Self {
[INFO] [stdout] 100 +     pub fn push(&self, frame: &'a dyn Frame) -> Self {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:274:41
[INFO] [stdout]     |
[INFO] [stdout] 274 |     pub fn for_each_fun(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 274 -     pub fn for_each_fun(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout] 274 +     pub fn for_each_fun(&self, cb: &mut dyn FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:280:44
[INFO] [stdout]     |
[INFO] [stdout] 280 |     pub fn for_each_struct(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 280 -     pub fn for_each_struct(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout] 280 +     pub fn for_each_struct(&self, cb: &mut dyn FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:286:42
[INFO] [stdout]     |
[INFO] [stdout] 286 |     pub fn for_each_enum(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 286 -     pub fn for_each_enum(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout] 286 +     pub fn for_each_enum(&self, cb: &mut dyn FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:292:47
[INFO] [stdout]     |
[INFO] [stdout] 292 |     pub fn for_each_namespace(&self, cb: &mut FnMut(Anchored<&NamespaceBody>)) {
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 292 -     pub fn for_each_namespace(&self, cb: &mut FnMut(Anchored<&NamespaceBody>)) {
[INFO] [stdout] 292 +     pub fn for_each_namespace(&self, cb: &mut dyn FnMut(Anchored<&NamespaceBody>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:298:51
[INFO] [stdout]     |
[INFO] [stdout] 298 |     pub fn for_each_fun_of_schema(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 298 -     pub fn for_each_fun_of_schema(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout] 298 +     pub fn for_each_fun_of_schema(&self, cb: &mut dyn FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:306:54
[INFO] [stdout]     |
[INFO] [stdout] 306 |     pub fn for_each_struct_of_schema(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 306 -     pub fn for_each_struct_of_schema(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout] 306 +     pub fn for_each_struct_of_schema(&self, cb: &mut dyn FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:316:52
[INFO] [stdout]     |
[INFO] [stdout] 316 |     pub fn for_each_enum_of_schema(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 316 -     pub fn for_each_enum_of_schema(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout] 316 +     pub fn for_each_enum_of_schema(&self, cb: &mut dyn FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:332:51
[INFO] [stdout]     |
[INFO] [stdout] 332 |     pub fn for_each_fun_of_schema(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 332 -     pub fn for_each_fun_of_schema(&self, cb: &mut FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout] 332 +     pub fn for_each_fun_of_schema(&self, cb: &mut dyn FnMut(Anchored<&FunctionDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:341:54
[INFO] [stdout]     |
[INFO] [stdout] 341 |     pub fn for_each_struct_of_schema(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     |                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 341 -     pub fn for_each_struct_of_schema(&self, cb: &mut FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout] 341 +     pub fn for_each_struct_of_schema(&self, cb: &mut dyn FnMut(Anchored<&StructDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast/anchored.rs:350:52
[INFO] [stdout]     |
[INFO] [stdout] 350 |     pub fn for_each_enum_of_schema(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 350 -     pub fn for_each_enum_of_schema(&self, cb: &mut FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout] 350 +     pub fn for_each_enum_of_schema(&self, cb: &mut dyn FnMut(Anchored<&EnumDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codegen/output.rs:47:32
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn new(writer: &'a mut fmt::Write) -> Self {
[INFO] [stdout]    |                                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 -     pub fn new(writer: &'a mut fmt::Write) -> Self {
[INFO] [stdout] 47 +     pub fn new(writer: &'a mut dyn fmt::Write) -> Self {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codegen/output.rs:120:35
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn fmt<F>(writer: &'a mut fmt::Write, f: F) -> std::fmt::Result
[INFO] [stdout]     |                                   ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 120 -     pub fn fmt<F>(writer: &'a mut fmt::Write, f: F) -> std::fmt::Result
[INFO] [stdout] 120 +     pub fn fmt<F>(writer: &'a mut dyn fmt::Write, f: F) -> std::fmt::Result
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/codegen/rust/ir/protocol.rs:193:37
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn for_each_fun(&self, cb: &mut FnMut(ast::Anchored<&ast::FunctionDecl>)) {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 193 -     fn for_each_fun(&self, cb: &mut FnMut(ast::Anchored<&ast::FunctionDecl>)) {
[INFO] [stdout] 193 +     fn for_each_fun(&self, cb: &mut dyn FnMut(ast::Anchored<&ast::FunctionDecl>)) {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/codegen/rust/ir/types.rs:5:64
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<fmt::Display + 'a>;
[INFO] [stdout]   |                                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 5 -     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<fmt::Display + 'a>;
[INFO] [stdout] 5 +     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<dyn fmt::Display + 'a>;
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/codegen/rust/ir/types.rs:11:64
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<fmt::Display + 'a> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<fmt::Display + 'a> {
[INFO] [stdout] 11 +     fn as_rust<'a>(&'a self, stack: &'a ast::Stack<'a>) -> Box<dyn fmt::Display + 'a> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.25s
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "96f9dd9f3fa9699c524e2184b859c20ed0edc53b00c6597185fc7232a9388c0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96f9dd9f3fa9699c524e2184b859c20ed0edc53b00c6597185fc7232a9388c0e", kill_on_drop: false }`
[INFO] [stdout] 96f9dd9f3fa9699c524e2184b859c20ed0edc53b00c6597185fc7232a9388c0e