[INFO] fetching crate rustix-bl 0.5.0...
[INFO] testing rustix-bl-0.5.0 against 1.54.0 for beta-1.55-1
[INFO] extracting crate rustix-bl 0.5.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rustix-bl 0.5.0 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6036b165f341b2482b251ea121bb14df2fd7baef02e7bfcd340d178c20deb2f2
[INFO] running `Command { std: "docker" "start" "-a" "6036b165f341b2482b251ea121bb14df2fd7baef02e7bfcd340d178c20deb2f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6036b165f341b2482b251ea121bb14df2fd7baef02e7bfcd340d178c20deb2f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6036b165f341b2482b251ea121bb14df2fd7baef02e7bfcd340d178c20deb2f2", kill_on_drop: false }`
[INFO] [stdout] 6036b165f341b2482b251ea121bb14df2fd7baef02e7bfcd340d178c20deb2f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2561b0358643950a136d41a0d97d25daaca253406b25343c074a7f3102f51ece
[INFO] running `Command { std: "docker" "start" "-a" "2561b0358643950a136d41a0d97d25daaca253406b25343c074a7f3102f51ece", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]    Compiling custom_derive v0.1.7
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling lmdb-sys v0.8.0
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling bincode v0.8.0
[INFO] [stderr]    Compiling suffix-rs v0.1.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]    Compiling typescriptify-derive v0.1.5
[INFO] [stderr]    Compiling typescriptify v0.1.5
[INFO] [stderr]    Compiling lmdb v0.8.0
[INFO] [stderr]    Compiling rustix-bl v0.5.0 (/opt/rustwide/workdir)
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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_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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.76s
[INFO] running `Command { std: "docker" "inspect" "2561b0358643950a136d41a0d97d25daaca253406b25343c074a7f3102f51ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2561b0358643950a136d41a0d97d25daaca253406b25343c074a7f3102f51ece", kill_on_drop: false }`
[INFO] [stdout] 2561b0358643950a136d41a0d97d25daaca253406b25343c074a7f3102f51ece
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10a2df94daacd5353219714f3c9f222c0e4cd72c65074979b77f977756676404
[INFO] running `Command { std: "docker" "start" "-a" "10a2df94daacd5353219714f3c9f222c0e4cd72c65074979b77f977756676404", kill_on_drop: false }`
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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_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] [stderr]    Compiling rustix-bl v0.5.0 (/opt/rustwide/workdir)
[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]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 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_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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.84s
[INFO] running `Command { std: "docker" "inspect" "10a2df94daacd5353219714f3c9f222c0e4cd72c65074979b77f977756676404", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10a2df94daacd5353219714f3c9f222c0e4cd72c65074979b77f977756676404", kill_on_drop: false }`
[INFO] [stdout] 10a2df94daacd5353219714f3c9f222c0e4cd72c65074979b77f977756676404
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] eaab17f269eab745e730b5c4011629b58c5b61aab649bcdaae879aed2df72ea0
[INFO] running `Command { std: "docker" "start" "-a" "eaab17f269eab745e730b5c4011629b58c5b61aab649bcdaae879aed2df72ea0", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stdout] running 15 tests
[INFO] [stderr]     --> src/datastore.rs:1063:17
[INFO] [stdout] test left_threaded_avl_tree::tests::always_works ... ok
[INFO] [stderr]      |
[INFO] [stderr] 1063 |                 (*cents_worth_total - *cents_worth_used)
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/persistencer.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Other(err: Box<std::error::Error>) {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:102:34
[INFO] [stderr]     |
[INFO] [stderr] 102 |             let db_environment = try!(lmdb::Environment::new().set_max_dbs(1).open(&dir));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:104:28
[INFO] [stderr]     |
[INFO] [stderr] 104 |             let database = try!(db_environment.create_db(None, db_flags));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:141:57
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 let mut rw_transaction: RwTransaction = try!(lmdb.db_env.begin_rw_txn());
[INFO] [stderr]     |                                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:144:28
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 let data = try!(serde_json::to_string(event));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 try!(rw_transaction.commit());
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:187:30
[INFO] [stderr]     |
[INFO] [stderr] 187 |                     let tx = try!(lmdb.db_env.begin_ro_txn());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:189:52
[INFO] [stderr]     |
[INFO] [stderr] 189 |                         let mut cursor: RoCursor = try!(tx.open_ro_cursor(lmdb.db));
[INFO] [stderr]     |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:200:40
[INFO] [stderr]     |
[INFO] [stderr] 200 | ...                   let json = try!(str::from_utf8(value));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:202:51
[INFO] [stderr]     |
[INFO] [stderr] 202 | ...                   let event: BLEvents = try!(serde_json::from_str(json));
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut config = StaticConfig::default_persistence(dir.to_str().unwrap());
[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/rustix_backend.rs:281:21
[INFO] [stderr]     |
[INFO] [stderr] 281 |                 let mut file_res = std::fs::File::create(filepath);
[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/rustix_backend.rs:319:13
[INFO] [stderr]     |
[INFO] [stderr] 319 |         let mut file_raw= File::open(filepath);
[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/persistencer.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         let mut fp = FilePersister {
[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/rustix_event_shop.rs:187:21
[INFO] [stderr]     |
[INFO] [stderr] 187 |                 let mut b = false;
[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/rustix_event_shop.rs:389:36
[INFO] [stderr]     |
[INFO] [stderr] 389 |                         for (_key, mut value) in &mut store.drink_scores_per_user {
[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/rustix_event_shop.rs:902:37
[INFO] [stderr]     |
[INFO] [stderr] 902 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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/rustix_event_shop.rs:937:37
[INFO] [stderr]     |
[INFO] [stderr] 937 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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/rustix_event_shop.rs:1117:37
[INFO] [stderr]      |
[INFO] [stderr] 1117 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[INFO] [stderr]      |                           ----^^^^
[INFO] [stderr]      |                           |
[INFO] [stderr]      |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> src/datastore.rs:1063:17
[INFO] [stderr]      |
[INFO] [stderr] 1063 |                 (*cents_worth_total - *cents_worth_used)
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/persistencer.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |         Other(err: Box<std::error::Error>) {
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:102:34
[INFO] [stderr]     |
[INFO] [stderr] 102 |             let db_environment = try!(lmdb::Environment::new().set_max_dbs(1).open(&dir));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:104:28
[INFO] [stderr]     |
[INFO] [stderr] 104 |             let database = try!(db_environment.create_db(None, db_flags));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:141:57
[INFO] [stderr]     |
[INFO] [stderr] 141 |                 let mut rw_transaction: RwTransaction = try!(lmdb.db_env.begin_rw_txn());
[INFO] [stderr]     |                                                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:144:28
[INFO] [stderr]     |
[INFO] [stderr] 144 |                 let data = try!(serde_json::to_string(event));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:146:17
[INFO] [stderr]     |
[INFO] [stderr] 146 |                 try!(rw_transaction.commit());
[INFO] [stderr]     |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:187:30
[INFO] [stderr]     |
[INFO] [stderr] 187 |                     let tx = try!(lmdb.db_env.begin_ro_txn());
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:189:52
[INFO] [stderr]     |
[INFO] [stderr] 189 |                         let mut cursor: RoCursor = try!(tx.open_ro_cursor(lmdb.db));
[INFO] [stderr]     |                                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:200:40
[INFO] [stderr]     |
[INFO] [stderr] 200 | ...                   let json = try!(str::from_utf8(value));
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/persistencer.rs:202:51
[INFO] [stderr]     |
[INFO] [stderr] 202 | ...                   let event: BLEvents = try!(serde_json::from_str(json));
[INFO] [stderr]     |                                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let mut config = StaticConfig::default_persistence(dir.to_str().unwrap());
[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/rustix_backend.rs:281:21
[INFO] [stderr]     |
[INFO] [stderr] 281 |                 let mut file_res = std::fs::File::create(filepath);
[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/rustix_backend.rs:319:13
[INFO] [stderr]     |
[INFO] [stderr] 319 |         let mut file_raw= File::open(filepath);
[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/persistencer.rs:115:13
[INFO] [stderr]     |
[INFO] [stderr] 115 |         let mut fp = FilePersister {
[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/rustix_event_shop.rs:187:21
[INFO] [stderr]     |
[INFO] [stderr] 187 |                 let mut b = false;
[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/rustix_event_shop.rs:389:36
[INFO] [stderr]     |
[INFO] [stderr] 389 |                         for (_key, mut value) in &mut store.drink_scores_per_user {
[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/rustix_event_shop.rs:902:37
[INFO] [stderr]     |
[INFO] [stderr] 902 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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/rustix_event_shop.rs:937:37
[INFO] [stderr]     |
[INFO] [stderr] 937 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[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/rustix_event_shop.rs:1117:37
[INFO] [stderr]      |
[INFO] [stderr] 1117 | ...                   let mut bill: &mut Bill = store.bills.get_mut(bill_idx).unwrap();
[INFO] [stderr]      |                           ----^^^^
[INFO] [stderr]      |                           |
[INFO] [stderr]      |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rustix_bl-e432fb69ece78bc6)
[INFO] [stdout] test rustix_event_shop::tests::events_serialize_and_deserialize_raw ... ok
[INFO] [stdout] test tests::it_transient_add_user ... ok
[INFO] [stdout] test rustix_backend::tests::simple_delete_item ... ok
[INFO] [stdout] test rustix_backend::tests::simple_create_user_on_backend ... ok
[INFO] [stdout] test rustix_backend::tests::simple_ffa_purchase ... ok
[INFO] [stdout] test left_threaded_avl_tree::tests::basic_removal_works ... ok
[INFO] [stdout] test rustix_backend::tests::simple_purchase ... ok
[INFO] [stdout] test left_threaded_avl_tree::tests::basic_adding_works ... ok
[INFO] [stdout] test rustix_event_shop::tests::hashset_test ... ok
[INFO] [stdout] test rustix_event_shop::tests::events_serialize_and_deserialize_packed ... ok
[INFO] [stdout] test rustix_backend::tests::simple_create_bill ... ok
[INFO] [stdout] test rustix_backend::tests::simple_create_item_on_backend ... ok
[INFO] [stdout] test rustix_backend::tests::simple_delete_user ... ok
[INFO] [stdout] test tests::it_add_user ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/blrustix-integration_test.rs (/opt/rustwide/target/debug/deps/blrustix_integration_test-06b76df4de17f46e)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rustix-bl
[INFO] [stdout] running 1 test
[INFO] [stdout] test it_hello_world ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/workdir/src/datastore.rs:1063:17
[INFO] [stderr]      |
[INFO] [stderr] 1063 |                 (*cents_worth_total - *cents_worth_used)
[INFO] [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "eaab17f269eab745e730b5c4011629b58c5b61aab649bcdaae879aed2df72ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaab17f269eab745e730b5c4011629b58c5b61aab649bcdaae879aed2df72ea0", kill_on_drop: false }`
[INFO] [stdout] eaab17f269eab745e730b5c4011629b58c5b61aab649bcdaae879aed2df72ea0
