[INFO] fetching crate rustix-bl 0.5.0...
[INFO] checking rustix-bl-0.5.0 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate rustix-bl 0.5.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate rustix-bl 0.5.0 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustix-bl 0.5.0
[INFO] finished tweaking crates.io crate rustix-bl 0.5.0
[INFO] tweaked toml for crates.io crate rustix-bl 0.5.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 131a79c4724cdc9baf379db7a4402b156d2cf90f9a53cd3f89a751bc3281921c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "131a79c4724cdc9baf379db7a4402b156d2cf90f9a53cd3f89a751bc3281921c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "131a79c4724cdc9baf379db7a4402b156d2cf90f9a53cd3f89a751bc3281921c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "131a79c4724cdc9baf379db7a4402b156d2cf90f9a53cd3f89a751bc3281921c", kill_on_drop: false }`
[INFO] [stdout] 131a79c4724cdc9baf379db7a4402b156d2cf90f9a53cd3f89a751bc3281921c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a6a602edf7f718640c754777d4e4150f8120eb13402756894e4a30d19c04eda3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a6a602edf7f718640c754777d4e4150f8120eb13402756894e4a30d19c04eda3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]    Compiling cc v1.0.59
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling lmdb-sys v0.8.0
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]    Compiling typescriptify-derive v0.1.5
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]     Checking typescriptify v0.1.5
[INFO] [stderr]     Checking lmdb v0.8.0
[INFO] [stderr]     Checking serde_yaml v0.7.5
[INFO] [stderr]     Checking bincode v0.8.0
[INFO] [stderr]     Checking suffix-rs v0.1.0
[INFO] [stderr]     Checking rustix-bl v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:102:34
[INFO] [stdout]     |
[INFO] [stdout] 102 |             let db_environment = try!(lmdb::Environment::new().set_max_dbs(1).open(&dir));
[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/persistencer.rs:104:28
[INFO] [stdout]     |
[INFO] [stdout] 104 |             let database = try!(db_environment.create_db(None, db_flags));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:141:57
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 let mut rw_transaction: RwTransaction = try!(lmdb.db_env.begin_rw_txn());
[INFO] [stdout]     |                                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:144:28
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let data = try!(serde_json::to_string(event));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 try!(rw_transaction.commit());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:187:30
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     let tx = try!(lmdb.db_env.begin_ro_txn());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:189:52
[INFO] [stdout]     |
[INFO] [stdout] 189 |                         let mut cursor: RoCursor = try!(tx.open_ro_cursor(lmdb.db));
[INFO] [stdout]     |                                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:200:40
[INFO] [stdout]     |
[INFO] [stdout] 200 | ...                   let json = try!(str::from_utf8(value));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:202:51
[INFO] [stdout]     |
[INFO] [stdout] 202 | ...                   let event: BLEvents = try!(serde_json::from_str(json));
[INFO] [stdout]     |                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/datastore.rs:1063:17
[INFO] [stdout]      |
[INFO] [stdout] 1063 |                 (*cents_worth_total - *cents_worth_used)
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/persistencer.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Other(err: Box<std::error::Error>) {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:102:34
[INFO] [stdout]     |
[INFO] [stdout] 102 |             let db_environment = try!(lmdb::Environment::new().set_max_dbs(1).open(&dir));
[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/persistencer.rs:104:28
[INFO] [stdout]     |
[INFO] [stdout] 104 |             let database = try!(db_environment.create_db(None, db_flags));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:141:57
[INFO] [stdout]     |
[INFO] [stdout] 141 |                 let mut rw_transaction: RwTransaction = try!(lmdb.db_env.begin_rw_txn());
[INFO] [stdout]     |                                                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:144:28
[INFO] [stdout]     |
[INFO] [stdout] 144 |                 let data = try!(serde_json::to_string(event));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:146:17
[INFO] [stdout]     |
[INFO] [stdout] 146 |                 try!(rw_transaction.commit());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:187:30
[INFO] [stdout]     |
[INFO] [stdout] 187 |                     let tx = try!(lmdb.db_env.begin_ro_txn());
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:189:52
[INFO] [stdout]     |
[INFO] [stdout] 189 |                         let mut cursor: RoCursor = try!(tx.open_ro_cursor(lmdb.db));
[INFO] [stdout]     |                                                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:200:40
[INFO] [stdout]     |
[INFO] [stdout] 200 | ...                   let json = try!(str::from_utf8(value));
[INFO] [stdout]     |                                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/persistencer.rs:202:51
[INFO] [stdout]     |
[INFO] [stdout] 202 | ...                   let event: BLEvents = try!(serde_json::from_str(json));
[INFO] [stdout]     |                                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/datastore.rs:1063:17
[INFO] [stdout]      |
[INFO] [stdout] 1063 |                 (*cents_worth_total - *cents_worth_used)
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/persistencer.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |         Other(err: Box<std::error::Error>) {
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut config = StaticConfig::default_persistence(dir.to_str().unwrap());
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/lib.rs:69:9
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let mut config = StaticConfig::default_persistence(dir.to_str().unwrap());
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/rustix_backend.rs:281:21
[INFO] [stdout]     |
[INFO] [stdout] 281 |                 let mut file_res = std::fs::File::create(filepath);
[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]    --> src/rustix_backend.rs:319:13
[INFO] [stdout]     |
[INFO] [stdout] 319 |         let mut file_raw= File::open(filepath);
[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]    --> src/persistencer.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let mut fp = FilePersister {
[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]    --> src/rustix_backend.rs:281:21
[INFO] [stdout]     |
[INFO] [stdout] 281 |                 let mut file_res = std::fs::File::create(filepath);
[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]    --> src/rustix_backend.rs:319:13
[INFO] [stdout]     |
[INFO] [stdout] 319 |         let mut file_raw= File::open(filepath);
[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]    --> src/persistencer.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let mut fp = FilePersister {
[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]    --> src/rustix_event_shop.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 let mut b = 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]    --> src/rustix_event_shop.rs:389:36
[INFO] [stdout]     |
[INFO] [stdout] 389 |                         for (_key, mut value) in &mut store.drink_scores_per_user {
[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]    --> src/rustix_event_shop.rs:902:37
[INFO] [stdout]     |
[INFO] [stdout] 902 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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]    --> src/rustix_event_shop.rs:937:37
[INFO] [stdout]     |
[INFO] [stdout] 937 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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]     --> src/rustix_event_shop.rs:1117:37
[INFO] [stdout]      |
[INFO] [stdout] 1117 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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]    --> src/rustix_event_shop.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 let mut b = 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]    --> src/rustix_event_shop.rs:389:36
[INFO] [stdout]     |
[INFO] [stdout] 389 |                         for (_key, mut value) in &mut store.drink_scores_per_user {
[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]    --> src/rustix_event_shop.rs:902:37
[INFO] [stdout]     |
[INFO] [stdout] 902 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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]    --> src/rustix_event_shop.rs:937:37
[INFO] [stdout]     |
[INFO] [stdout] 937 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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]     --> src/rustix_event_shop.rs:1117:37
[INFO] [stdout]      |
[INFO] [stdout] 1117 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[INFO] [stdout]      |                           ----^^^^
[INFO] [stdout]      |                           |
[INFO] [stdout]      |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem::replace`
[INFO] [stdout]  --> benches/benchmark.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::mem::replace;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.93s
[INFO] running `Command { std: "docker" "inspect" "a6a602edf7f718640c754777d4e4150f8120eb13402756894e4a30d19c04eda3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a602edf7f718640c754777d4e4150f8120eb13402756894e4a30d19c04eda3", kill_on_drop: false }`
[INFO] [stdout] a6a602edf7f718640c754777d4e4150f8120eb13402756894e4a30d19c04eda3
