[INFO] fetching crate simplisp 0.4.0... [INFO] checking simplisp-0.4.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] extracting crate simplisp 0.4.0 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate simplisp 0.4.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate simplisp 0.4.0 [INFO] finished tweaking crates.io crate simplisp 0.4.0 [INFO] tweaked toml for crates.io crate simplisp 0.4.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 13 packages to latest compatible versions [INFO] [stderr] Adding backtrace v0.2.3 (latest: v0.3.73) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding error-chain v0.5.0 (latest: v0.12.4) [INFO] [stderr] Adding winapi v0.2.8 (latest: v0.3.9) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded backtrace v0.2.3 [INFO] [stderr] Downloaded dbghelp-sys v0.2.0 [INFO] [stderr] Downloaded error-chain v0.5.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 3000d9447adb425fdb264b83e2fabf0af9efbcc773e51972f1adbe4daa201217 [INFO] running `Command { std: "docker" "start" "-a" "3000d9447adb425fdb264b83e2fabf0af9efbcc773e51972f1adbe4daa201217", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "3000d9447adb425fdb264b83e2fabf0af9efbcc773e51972f1adbe4daa201217", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3000d9447adb425fdb264b83e2fabf0af9efbcc773e51972f1adbe4daa201217", kill_on_drop: false }` [INFO] [stdout] 3000d9447adb425fdb264b83e2fabf0af9efbcc773e51972f1adbe4daa201217 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d915e4e8f0a6ae4c2356d4f13453067474303541a7eb05a8e43a8e78b4e6467f [INFO] running `Command { std: "docker" "start" "-a" "d915e4e8f0a6ae4c2356d4f13453067474303541a7eb05a8e43a8e78b4e6467f", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Compiling libc v0.2.158 [INFO] [stderr] Checking winapi v0.2.8 [INFO] [stderr] Compiling backtrace v0.2.3 [INFO] [stderr] Compiling backtrace-sys v0.1.37 [INFO] [stderr] Compiling dbghelp-sys v0.2.0 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Checking error-chain v0.5.0 [INFO] [stderr] Checking simplisp v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:14:23 [INFO] [stdout] | [INFO] [stdout] 14 | root: try!(Self::parse_program_text(program_text)), [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:40:38 [INFO] [stdout] | [INFO] [stdout] 40 | let inner_node = try!(Self::parse(enumerated_text, program_text)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:77:61 [INFO] [stdout] | [INFO] [stdout] 77 | ... let string_object = try!(Self::parse_double_quoted_text(index, enumerated_text, program_text)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:82:61 [INFO] [stdout] | [INFO] [stdout] 82 | ... let string_object = try!(Self::parse_single_quoted_text(index, enumerated_text, program_text)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:127:24 [INFO] [stdout] | [INFO] [stdout] 127 | let root = try!(Self::parse(&mut enumerated_text, program_text)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:46:37 [INFO] [stdout] | [INFO] [stdout] 46 | ... None => try!(self.symbol_stack_search(&symbol)), [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:67:22 [INFO] [stdout] | [INFO] [stdout] 67 | let result = try!(self.evaluate(arg, &execution_tree_root_object)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:84:19 [INFO] [stdout] | [INFO] [stdout] 84 | let ast = try!(AbstractSyntaxTree::new(source)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:86:30 [INFO] [stdout] | [INFO] [stdout] 86 | let execution_tree = try!(ExecutionTree::new(&ast)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:118:37 [INFO] [stdout] | [INFO] [stdout] 118 | ... None => try!(self.symbol_stack_search(&symbol)), [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:129:49 [INFO] [stdout] | [INFO] [stdout] 129 | ... result.push(try!(self.evaluate(arg, &object))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:138:37 [INFO] [stdout] | [INFO] [stdout] 138 | result.push(try!(self.evaluate(arg, &other))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:140:41 [INFO] [stdout] | [INFO] [stdout] 140 | ... result.push(try!(self.evaluate(arg, &object))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:16:20 [INFO] [stdout] | [INFO] [stdout] 16 | let root = try!(Self::visit_node(abstract_root.deref())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:73:36 [INFO] [stdout] | [INFO] [stdout] 73 | let new_node = try!(Self::visit_node(inner_node)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:78:38 [INFO] [stdout] | [INFO] [stdout] 78 | let new_object = try!(Self::visit_string(string)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:128:46 [INFO] [stdout] | [INFO] [stdout] 128 | ... let string = try!(Self::convert_escape_sequences(&string[1..(byte_len - 1)])); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:138:46 [INFO] [stdout] | [INFO] [stdout] 138 | ... let string = try!(Self::convert_escape_sequences(&string[1..(byte_len - 1)])); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree_node.rs:34:26 [INFO] [stdout] | [INFO] [stdout] 34 | let string = try!(object.to_string()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree_object.rs:132:57 [INFO] [stdout] | [INFO] [stdout] 132 | &ExecutionTreeObject::Node(ref some) => try!(some.to_string()), [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:14:23 [INFO] [stdout] | [INFO] [stdout] 14 | root: try!(Self::parse_program_text(program_text)), [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:40:38 [INFO] [stdout] | [INFO] [stdout] 40 | let inner_node = try!(Self::parse(enumerated_text, program_text)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:77:61 [INFO] [stdout] | [INFO] [stdout] 77 | ... let string_object = try!(Self::parse_double_quoted_text(index, enumerated_text, program_text)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:82:61 [INFO] [stdout] | [INFO] [stdout] 82 | ... let string_object = try!(Self::parse_single_quoted_text(index, enumerated_text, program_text)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/abstract_syntax_tree.rs:127:24 [INFO] [stdout] | [INFO] [stdout] 127 | let root = try!(Self::parse(&mut enumerated_text, program_text)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:46:37 [INFO] [stdout] | [INFO] [stdout] 46 | ... None => try!(self.symbol_stack_search(&symbol)), [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:67:22 [INFO] [stdout] | [INFO] [stdout] 67 | let result = try!(self.evaluate(arg, &execution_tree_root_object)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:84:19 [INFO] [stdout] | [INFO] [stdout] 84 | let ast = try!(AbstractSyntaxTree::new(source)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:86:30 [INFO] [stdout] | [INFO] [stdout] 86 | let execution_tree = try!(ExecutionTree::new(&ast)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:118:37 [INFO] [stdout] | [INFO] [stdout] 118 | ... None => try!(self.symbol_stack_search(&symbol)), [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:129:49 [INFO] [stdout] | [INFO] [stdout] 129 | ... result.push(try!(self.evaluate(arg, &object))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:138:37 [INFO] [stdout] | [INFO] [stdout] 138 | result.push(try!(self.evaluate(arg, &other))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/environment.rs:140:41 [INFO] [stdout] | [INFO] [stdout] 140 | ... result.push(try!(self.evaluate(arg, &object))); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:16:20 [INFO] [stdout] | [INFO] [stdout] 16 | let root = try!(Self::visit_node(abstract_root.deref())); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:73:36 [INFO] [stdout] | [INFO] [stdout] 73 | let new_node = try!(Self::visit_node(inner_node)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:78:38 [INFO] [stdout] | [INFO] [stdout] 78 | let new_object = try!(Self::visit_string(string)); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:128:46 [INFO] [stdout] | [INFO] [stdout] 128 | ... let string = try!(Self::convert_escape_sequences(&string[1..(byte_len - 1)])); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree.rs:138:46 [INFO] [stdout] | [INFO] [stdout] 138 | ... let string = try!(Self::convert_escape_sequences(&string[1..(byte_len - 1)])); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree_node.rs:34:26 [INFO] [stdout] | [INFO] [stdout] 34 | let string = try!(object.to_string()); [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead [INFO] [stdout] --> src/lisp/execution_tree_object.rs:132:57 [INFO] [stdout] | [INFO] [stdout] 132 | &ExecutionTreeObject::Node(ref some) => try!(some.to_string()), [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/error/mod.rs:50:33 [INFO] [stdout] | [INFO] [stdout] 50 | ErrorWrapper(cause: Box) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 50 | ErrorWrapper(cause: Box) { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/error/mod.rs:50:33 [INFO] [stdout] | [INFO] [stdout] 50 | ErrorWrapper(cause: Box) { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [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 [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 50 | ErrorWrapper(cause: Box) { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/error/mod.rs:51:31 [INFO] [stdout] | [INFO] [stdout] 51 | description(cause.description()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string() [INFO] [stdout] --> src/error/mod.rs:51:31 [INFO] [stdout] | [INFO] [stdout] 51 | description(cause.description()) [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing [INFO] [stdout] --> src/lisp/execution_tree.rs:16:55 [INFO] [stdout] | [INFO] [stdout] 16 | let root = try!(Self::visit_node(abstract_root.deref())); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `AbstractSyntaxTreeNode<'_>` does not implement `Deref`, so calling `deref` on `&AbstractSyntaxTreeNode<'_>` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 16 - let root = try!(Self::visit_node(abstract_root.deref())); [INFO] [stdout] 16 + let root = try!(Self::visit_node(abstract_root)); [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `AbstractSyntaxTreeNode<'_>`, implement `Clone` for it [INFO] [stdout] --> src/lisp/abstract_syntax_tree_node.rs:4:1 [INFO] [stdout] | [INFO] [stdout] 4 + #[derive(Clone)] [INFO] [stdout] 5 | pub struct AbstractSyntaxTreeNode<'a> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing [INFO] [stdout] --> src/lisp/execution_tree.rs:16:55 [INFO] [stdout] | [INFO] [stdout] 16 | let root = try!(Self::visit_node(abstract_root.deref())); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `AbstractSyntaxTreeNode<'_>` does not implement `Deref`, so calling `deref` on `&AbstractSyntaxTreeNode<'_>` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 16 - let root = try!(Self::visit_node(abstract_root.deref())); [INFO] [stdout] 16 + let root = try!(Self::visit_node(abstract_root)); [INFO] [stdout] | [INFO] [stdout] help: if you meant to clone `AbstractSyntaxTreeNode<'_>`, implement `Clone` for it [INFO] [stdout] --> src/lisp/abstract_syntax_tree_node.rs:4:1 [INFO] [stdout] | [INFO] [stdout] 4 + #[derive(Clone)] [INFO] [stdout] 5 | pub struct AbstractSyntaxTreeNode<'a> { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 23 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 23 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.05s [INFO] running `Command { std: "docker" "inspect" "d915e4e8f0a6ae4c2356d4f13453067474303541a7eb05a8e43a8e78b4e6467f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d915e4e8f0a6ae4c2356d4f13453067474303541a7eb05a8e43a8e78b4e6467f", kill_on_drop: false }` [INFO] [stdout] d915e4e8f0a6ae4c2356d4f13453067474303541a7eb05a8e43a8e78b4e6467f