[INFO] crate timi 0.2.1 is already in cache
[INFO] extracting crate timi 0.2.1 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/timi/0.2.1
[INFO] extracting crate timi 0.2.1 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/timi/0.2.1
[INFO] validating manifest of timi-0.2.1 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of timi-0.2.1 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing timi-0.2.1
[INFO] finished frobbing timi-0.2.1
[INFO] frobbed toml for timi-0.2.1 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/timi/0.2.1/Cargo.toml
[INFO] started frobbing timi-0.2.1
[INFO] finished frobbing timi-0.2.1
[INFO] frobbed toml for timi-0.2.1 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/timi/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building timi-0.2.1 against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/timi/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 70872d2a7526e85b9bd717b317c4807280be9647149a9d4307c72b39548e72b7
[INFO] running `"docker" "start" "-a" "70872d2a7526e85b9bd717b317c4807280be9647149a9d4307c72b39548e72b7"`
[INFO] [stderr]    Compiling encode_unicode v0.3.5
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling prettytable-rs v0.6.7
[INFO] [stderr]    Compiling rustyline v1.0.0
[INFO] [stderr]    Compiling timi v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]     --> src/machine.rs:1507:16
[INFO] [stderr]      |
[INFO] [stderr] 1507 |             Ok((ListAccess::Cons(x_addr, xs_addr)))
[INFO] [stderr]      |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:567:21
[INFO] [stderr]     |
[INFO] [stderr] 567 | fn parse_identifier(mut cursor: &mut TokenizerCursor) -> Result<(Range, CoreToken), ParseError> {
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:749:15
[INFO] [stderr]     |
[INFO] [stderr] 749 | fn parse_pack(mut c: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |               ----^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:893:18
[INFO] [stderr]     |
[INFO] [stderr] 893 | fn parse_mul_div(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:906:18
[INFO] [stderr]     |
[INFO] [stderr] 906 | fn parse_add_sub(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:919:16
[INFO] [stderr]     |
[INFO] [stderr] 919 | fn parse_relop(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                ----^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:938:14
[INFO] [stderr]     |
[INFO] [stderr] 938 | fn parse_and(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |              ----^^^^^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:950:13
[INFO] [stderr]     |
[INFO] [stderr] 950 | fn parse_or(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pretty_print.rs:82:32
[INFO] [stderr]    |
[INFO] [stderr] 82 |                                mut processed: &mut HashSet<Addr>,
[INFO] [stderr]    |                                ----^^^^^^^^^
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pretty_print.rs:83:32
[INFO] [stderr]    |
[INFO] [stderr] 83 |                                mut rec_stack: &mut HashSet<Addr>) -> bool {
[INFO] [stderr]    |                                ----^^^^^^^^^
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]     --> src/machine.rs:1507:16
[INFO] [stderr]      |
[INFO] [stderr] 1507 |             Ok((ListAccess::Cons(x_addr, xs_addr)))
[INFO] [stderr]      |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]    --> src/bin.rs:144:37
[INFO] [stderr]     |
[INFO] [stderr] 144 |             let sc_defn_str = input.trim_left_matches("define ").to_string();
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:567:21
[INFO] [stderr]     |
[INFO] [stderr] 567 | fn parse_identifier(mut cursor: &mut TokenizerCursor) -> Result<(Range, CoreToken), ParseError> {
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:749:15
[INFO] [stderr]     |
[INFO] [stderr] 749 | fn parse_pack(mut c: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |               ----^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:893:18
[INFO] [stderr]     |
[INFO] [stderr] 893 | fn parse_mul_div(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:906:18
[INFO] [stderr]     |
[INFO] [stderr] 906 | fn parse_add_sub(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:919:16
[INFO] [stderr]     |
[INFO] [stderr] 919 | fn parse_relop(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                ----^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:938:14
[INFO] [stderr]     |
[INFO] [stderr] 938 | fn parse_and(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |              ----^^^^^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:950:13
[INFO] [stderr]     |
[INFO] [stderr] 950 | fn parse_or(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pretty_print.rs:82:32
[INFO] [stderr]    |
[INFO] [stderr] 82 |                                mut processed: &mut HashSet<Addr>,
[INFO] [stderr]    |                                ----^^^^^^^^^
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pretty_print.rs:83:32
[INFO] [stderr]    |
[INFO] [stderr] 83 |                                mut rec_stack: &mut HashSet<Addr>) -> bool {
[INFO] [stderr]    |                                ----^^^^^^^^^
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.65s
[INFO] running `"docker" "inspect" "70872d2a7526e85b9bd717b317c4807280be9647149a9d4307c72b39548e72b7"`
[INFO] running `"docker" "rm" "-f" "70872d2a7526e85b9bd717b317c4807280be9647149a9d4307c72b39548e72b7"`
[INFO] [stdout] 70872d2a7526e85b9bd717b317c4807280be9647149a9d4307c72b39548e72b7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/timi/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] ad7769e82387cef6f05d18fda0a44a0e839286eebacc70a7fd41666f1588f270
[INFO] running `"docker" "start" "-a" "ad7769e82387cef6f05d18fda0a44a0e839286eebacc70a7fd41666f1588f270"`
[INFO] [stderr]    Compiling timi v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]     --> src/machine.rs:1507:16
[INFO] [stderr]      |
[INFO] [stderr] 1507 |             Ok((ListAccess::Cons(x_addr, xs_addr)))
[INFO] [stderr]      |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]     --> src/machine.rs:1507:16
[INFO] [stderr]      |
[INFO] [stderr] 1507 |             Ok((ListAccess::Cons(x_addr, xs_addr)))
[INFO] [stderr]      |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left_matches': superseded by `trim_start_matches`
[INFO] [stderr]    --> src/bin.rs:144:37
[INFO] [stderr]     |
[INFO] [stderr] 144 |             let sc_defn_str = input.trim_left_matches("define ").to_string();
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:567:21
[INFO] [stderr]     |
[INFO] [stderr] 567 | fn parse_identifier(mut cursor: &mut TokenizerCursor) -> Result<(Range, CoreToken), ParseError> {
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:749:15
[INFO] [stderr]     |
[INFO] [stderr] 749 | fn parse_pack(mut c: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |               ----^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:893:18
[INFO] [stderr]     |
[INFO] [stderr] 893 | fn parse_mul_div(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:906:18
[INFO] [stderr]     |
[INFO] [stderr] 906 | fn parse_add_sub(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:919:16
[INFO] [stderr]     |
[INFO] [stderr] 919 | fn parse_relop(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                ----^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:938:14
[INFO] [stderr]     |
[INFO] [stderr] 938 | fn parse_and(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |              ----^^^^^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:950:13
[INFO] [stderr]     |
[INFO] [stderr] 950 | fn parse_or(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pretty_print.rs:82:32
[INFO] [stderr]    |
[INFO] [stderr] 82 |                                mut processed: &mut HashSet<Addr>,
[INFO] [stderr]    |                                ----^^^^^^^^^
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pretty_print.rs:83:32
[INFO] [stderr]    |
[INFO] [stderr] 83 |                                mut rec_stack: &mut HashSet<Addr>) -> bool {
[INFO] [stderr]    |                                ----^^^^^^^^^
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:567:21
[INFO] [stderr]     |
[INFO] [stderr] 567 | fn parse_identifier(mut cursor: &mut TokenizerCursor) -> Result<(Range, CoreToken), ParseError> {
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:749:15
[INFO] [stderr]     |
[INFO] [stderr] 749 | fn parse_pack(mut c: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |               ----^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:893:18
[INFO] [stderr]     |
[INFO] [stderr] 893 | fn parse_mul_div(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:906:18
[INFO] [stderr]     |
[INFO] [stderr] 906 | fn parse_add_sub(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:919:16
[INFO] [stderr]     |
[INFO] [stderr] 919 | fn parse_relop(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |                ----^^^^^^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:938:14
[INFO] [stderr]     |
[INFO] [stderr] 938 | fn parse_and(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |              ----^^^^^^
[INFO] [stderr]     |              |
[INFO] [stderr]     |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend.rs:950:13
[INFO] [stderr]     |
[INFO] [stderr] 950 | fn parse_or(mut cursor: &mut ParserCursor) -> Result<CoreExpr, ParseError> {
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pretty_print.rs:82:32
[INFO] [stderr]    |
[INFO] [stderr] 82 |                                mut processed: &mut HashSet<Addr>,
[INFO] [stderr]    |                                ----^^^^^^^^^
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/pretty_print.rs:83:32
[INFO] [stderr]    |
[INFO] [stderr] 83 |                                mut rec_stack: &mut HashSet<Addr>) -> bool {
[INFO] [stderr]    |                                ----^^^^^^^^^
[INFO] [stderr]    |                                |
[INFO] [stderr]    |                                help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `"docker" "inspect" "ad7769e82387cef6f05d18fda0a44a0e839286eebacc70a7fd41666f1588f270"`
[INFO] running `"docker" "rm" "-f" "ad7769e82387cef6f05d18fda0a44a0e839286eebacc70a7fd41666f1588f270"`
[INFO] [stdout] ad7769e82387cef6f05d18fda0a44a0e839286eebacc70a7fd41666f1588f270