[INFO] cloning repository https://github.com/stenbror/python_core_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stenbror/python_core_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstenbror%2Fpython_core_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstenbror%2Fpython_core_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d73e82979c3503c953d90bdf74943caa6c20deb4
[INFO] checking stenbror/python_core_rust against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstenbror%2Fpython_core_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stenbror/python_core_rust on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/stenbror/python_core_rust
[INFO] finished tweaking git repo https://github.com/stenbror/python_core_rust
[INFO] tweaked toml for git repo https://github.com/stenbror/python_core_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/stenbror/python_core_rust 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 455c111b9e89a0b677ae6d9a6754c6ee8d03491f975cbf0a710dafa3ae281f4b
[INFO] running `Command { std: "docker" "start" "-a" "455c111b9e89a0b677ae6d9a6754c6ee8d03491f975cbf0a710dafa3ae281f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "455c111b9e89a0b677ae6d9a6754c6ee8d03491f975cbf0a710dafa3ae281f4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "455c111b9e89a0b677ae6d9a6754c6ee8d03491f975cbf0a710dafa3ae281f4b", kill_on_drop: false }`
[INFO] [stdout] 455c111b9e89a0b677ae6d9a6754c6ee8d03491f975cbf0a710dafa3ae281f4b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88f1c7d6d1afceebe6d9361e6d6d866fcfdafc58a74f5c01b2e85f6d41669337
[INFO] running `Command { std: "docker" "start" "-a" "88f1c7d6d1afceebe6d9361e6d6d866fcfdafc58a74f5c01b2e85f6d41669337", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Checking python_runtime_engine v0.1.0 (/opt/rustwide/workdir/python_runtime_engine)
[INFO] [stdout] warning: unused import: `crate::parser::expressions::ExpressionMethods`
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:618:9
[INFO] [stdout]     |
[INFO] [stdout] 618 |     use crate::parser::expressions::ExpressionMethods;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_double_quote` is never read
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut is_double_quote = false;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end_pos` is never read
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:757:25
[INFO] [stdout]     |
[INFO] [stdout] 757 |                 let mut end_pos = 0;
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_at_beginning_of_line`
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:747:66
[INFO] [stdout]     |
[INFO] [stdout] 747 | ... Vec<char>, is_at_beginning_of_line: bool, is_blank_line: bool) -> Result<Token, Token> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_at_beginning_of_line`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:749:13
[INFO] [stdout]     |
[INFO] [stdout] 749 |         let mut start = buffer.index();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:1043:13
[INFO] [stdout]      |
[INFO] [stdout] 1043 |             _ => break
[INFO] [stdout]      |             ^ no value can reach this
[INFO] [stdout]      |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:1043:13
[INFO] [stdout]      |
[INFO] [stdout] 1023 |             Ok(x) => {
[INFO] [stdout]      |             ----- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1040 |             Err(x) => {
[INFO] [stdout]      |             ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1043 |             _ => break
[INFO] [stdout]      |             ^ collectively making this unreachable
[INFO] [stdout]      = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `at_beginning_of_line` is never read
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:1030:25
[INFO] [stdout]      |
[INFO] [stdout] 1030 |                         at_beginning_of_line = true;
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:989:25
[INFO] [stdout]     |
[INFO] [stdout] 989 |                     let mut el : u32 = el_last.clone();
[INFO] [stdout]     |                         ----^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path_and_file`
[INFO] [stdout]   --> python_runtime_engine/src/parser/source_buffer.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn from_file(&mut self, path_and_file: &'static str) -> bool {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_path_and_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `symbol1`
[INFO] [stdout]    --> python_runtime_engine/src/parser/expressions.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 let symbol1 = self.get_symbol();
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_symbol1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `symbol1` is never read
[INFO] [stdout]    --> python_runtime_engine/src/parser/expressions.rs:806:11
[INFO] [stdout]     |
[INFO] [stdout] 806 |         let mut symbol1 : Option<Box<Token>> = None;
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `parse_eval_input`, and `parse_file_input` are never used
[INFO] [stdout]   --> python_runtime_engine/src/parser/parser.rs:9:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait ParserMethods {
[INFO] [stdout]    |           ------------- associated items in this trait
[INFO] [stdout] 9  |     fn new(buffer: &mut SourceBuffer, tab_size: u8) -> Self;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn parse_eval_input(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     fn parse_file_input(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `parse_expr_stmt`, `parse_import_as_name_stmt`, and `parse_import_as_names_stmt` are never used
[INFO] [stdout]   --> python_runtime_engine/src/parser/statements.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub trait StatementMethods {
[INFO] [stdout]    |           ---------------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn parse_expr_stmt(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn parse_import_as_name_stmt(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     fn parse_dotted_name_as_stmt(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout] 26 |     fn parse_import_as_names_stmt(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking python_core v0.1.0 (/opt/rustwide/workdir/python_core)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> python_core/src/main.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |         Some(x) => {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> python_core/src/main.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |         Some(x) => {
[INFO] [stdout]    |              ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `is_double_quote` is never read
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let mut is_double_quote = false;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `end_pos` is never read
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:757:25
[INFO] [stdout]     |
[INFO] [stdout] 757 |                 let mut end_pos = 0;
[INFO] [stdout]     |                         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_at_beginning_of_line`
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:747:66
[INFO] [stdout]     |
[INFO] [stdout] 747 | ... Vec<char>, is_at_beginning_of_line: bool, is_blank_line: bool) -> Result<Token, Token> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_at_beginning_of_line`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:749:13
[INFO] [stdout]     |
[INFO] [stdout] 749 |         let mut start = buffer.index();
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:1043:13
[INFO] [stdout]      |
[INFO] [stdout] 1043 |             _ => break
[INFO] [stdout]      |             ^ no value can reach this
[INFO] [stdout]      |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:1043:13
[INFO] [stdout]      |
[INFO] [stdout] 1023 |             Ok(x) => {
[INFO] [stdout]      |             ----- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1040 |             Err(x) => {
[INFO] [stdout]      |             ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 1043 |             _ => break
[INFO] [stdout]      |             ^ collectively making this unreachable
[INFO] [stdout]      = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `at_beginning_of_line` is never read
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:1030:25
[INFO] [stdout]      |
[INFO] [stdout] 1030 |                         at_beginning_of_line = true;
[INFO] [stdout]      |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/lexical_analyzer.rs:989:25
[INFO] [stdout]     |
[INFO] [stdout] 989 |                     let mut el : u32 = el_last.clone();
[INFO] [stdout]     |                         ----^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:1940:13
[INFO] [stdout]      |
[INFO] [stdout] 1940 |         let mut at_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:2257:13
[INFO] [stdout]      |
[INFO] [stdout] 2257 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:2469:13
[INFO] [stdout]      |
[INFO] [stdout] 2469 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:2879:13
[INFO] [stdout]      |
[INFO] [stdout] 2879 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3301:13
[INFO] [stdout]      |
[INFO] [stdout] 3301 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3326:13
[INFO] [stdout]      |
[INFO] [stdout] 3326 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3351:13
[INFO] [stdout]      |
[INFO] [stdout] 3351 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3390:16
[INFO] [stdout]      |
[INFO] [stdout] 3390 |             Ok(y) => {
[INFO] [stdout]      |                ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3376:13
[INFO] [stdout]      |
[INFO] [stdout] 3376 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3415:16
[INFO] [stdout]      |
[INFO] [stdout] 3415 |             Ok(y) => {
[INFO] [stdout]      |                ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3401:13
[INFO] [stdout]      |
[INFO] [stdout] 3401 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3464:16
[INFO] [stdout]      |
[INFO] [stdout] 3464 |             Ok(y) => {
[INFO] [stdout]      |                ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3426:13
[INFO] [stdout]      |
[INFO] [stdout] 3426 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3475:13
[INFO] [stdout]      |
[INFO] [stdout] 3475 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3516:13
[INFO] [stdout]      |
[INFO] [stdout] 3516 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3533:13
[INFO] [stdout]      |
[INFO] [stdout] 3533 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3550:13
[INFO] [stdout]      |
[INFO] [stdout] 3550 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3567:13
[INFO] [stdout]      |
[INFO] [stdout] 3567 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3590:16
[INFO] [stdout]      |
[INFO] [stdout] 3590 |             Ok(x) => {
[INFO] [stdout]      |                ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3584:13
[INFO] [stdout]      |
[INFO] [stdout] 3584 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3603:13
[INFO] [stdout]      |
[INFO] [stdout] 3603 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3622:13
[INFO] [stdout]      |
[INFO] [stdout] 3622 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3641:13
[INFO] [stdout]      |
[INFO] [stdout] 3641 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3660:13
[INFO] [stdout]      |
[INFO] [stdout] 3660 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3679:13
[INFO] [stdout]      |
[INFO] [stdout] 3679 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> python_runtime_engine/src/parser/lexical_analyzer.rs:3698:13
[INFO] [stdout]      |
[INFO] [stdout] 3698 |         let mut is_beginning_of_line = false;
[INFO] [stdout]      |             ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path_and_file`
[INFO] [stdout]   --> python_runtime_engine/src/parser/source_buffer.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn from_file(&mut self, path_and_file: &'static str) -> bool {
[INFO] [stdout]    |                             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_path_and_file`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> python_runtime_engine/src/parser/source_buffer.rs:334:13
[INFO] [stdout]     |
[INFO] [stdout] 334 |         for n in 1 .. 9 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> python_runtime_engine/src/parser/source_buffer.rs:347:13
[INFO] [stdout]     |
[INFO] [stdout] 347 |         for n in 1 .. 11 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> python_runtime_engine/src/parser/source_buffer.rs:360:13
[INFO] [stdout]     |
[INFO] [stdout] 360 |         for n in 1 .. 23 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> python_runtime_engine/src/parser/source_buffer.rs:373:13
[INFO] [stdout]     |
[INFO] [stdout] 373 |         for n in 1 .. 4 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> python_runtime_engine/src/parser/source_buffer.rs:386:13
[INFO] [stdout]     |
[INFO] [stdout] 386 |         for n in 1 .. 5 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `symbol1`
[INFO] [stdout]    --> python_runtime_engine/src/parser/expressions.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 let symbol1 = self.get_symbol();
[INFO] [stdout]     |                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_symbol1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `symbol1` is never read
[INFO] [stdout]    --> python_runtime_engine/src/parser/expressions.rs:806:11
[INFO] [stdout]     |
[INFO] [stdout] 806 |         let mut symbol1 : Option<Box<Token>> = None;
[INFO] [stdout]     |                 ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:635:13
[INFO] [stdout]     |
[INFO] [stdout] 635 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:657:13
[INFO] [stdout]     |
[INFO] [stdout] 657 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:682:13
[INFO] [stdout]     |
[INFO] [stdout] 682 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:686:13
[INFO] [stdout]     |
[INFO] [stdout] 686 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:717:13
[INFO] [stdout]     |
[INFO] [stdout] 717 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:742:13
[INFO] [stdout]     |
[INFO] [stdout] 742 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:746:13
[INFO] [stdout]     |
[INFO] [stdout] 746 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:777:13
[INFO] [stdout]     |
[INFO] [stdout] 777 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:800:13
[INFO] [stdout]     |
[INFO] [stdout] 800 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> python_runtime_engine/src/parser/statements.rs:823:13
[INFO] [stdout]     |
[INFO] [stdout] 823 |         let mut separators = Vec::<Box<Token>>::new();
[INFO] [stdout]     |             ----^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `parse_eval_input` and `parse_file_input` are never used
[INFO] [stdout]   --> python_runtime_engine/src/parser/parser.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub trait ParserMethods {
[INFO] [stdout]    |           ------------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn parse_eval_input(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 14 |     fn parse_file_input(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `parse_import_as_name_stmt` and `parse_import_as_names_stmt` are never used
[INFO] [stdout]   --> python_runtime_engine/src/parser/statements.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 7  | pub trait StatementMethods {
[INFO] [stdout]    |           ---------------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn parse_import_as_name_stmt(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     fn parse_dotted_name_as_stmt(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout] 26 |     fn parse_import_as_names_stmt(&mut self) -> Result<Box<ParseNode>, SyntaxError>;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "88f1c7d6d1afceebe6d9361e6d6d866fcfdafc58a74f5c01b2e85f6d41669337", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88f1c7d6d1afceebe6d9361e6d6d866fcfdafc58a74f5c01b2e85f6d41669337", kill_on_drop: false }`
[INFO] [stdout] 88f1c7d6d1afceebe6d9361e6d6d866fcfdafc58a74f5c01b2e85f6d41669337