[INFO] fetching crate hd44780 0.2.2...
[INFO] testing hd44780-0.2.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate hd44780 0.2.2 into /workspace/builds/worker-22/source
[INFO] validating manifest of crates.io crate hd44780 0.2.2 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hd44780 0.2.2
[INFO] finished tweaking crates.io crate hd44780 0.2.2
[INFO] tweaked toml for crates.io crate hd44780 0.2.2 written to /workspace/builds/worker-22/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fb165cb8befab510eeed8056b04e4b8cf51424030ac283ed8934bd7a42671c5
[INFO] running `Command { std: "docker" "start" "-a" "2fb165cb8befab510eeed8056b04e4b8cf51424030ac283ed8934bd7a42671c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fb165cb8befab510eeed8056b04e4b8cf51424030ac283ed8934bd7a42671c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fb165cb8befab510eeed8056b04e4b8cf51424030ac283ed8934bd7a42671c5", kill_on_drop: false }`
[INFO] [stdout] 2fb165cb8befab510eeed8056b04e4b8cf51424030ac283ed8934bd7a42671c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27414a65f97b8ea745fa20eeff30b0ca35cc3e0fe6b5da4284154e1f97903c89
[INFO] running `Command { std: "docker" "start" "-a" "27414a65f97b8ea745fa20eeff30b0ca35cc3e0fe6b5da4284154e1f97903c89", kill_on_drop: false }`
[INFO] [stderr]    Compiling hd44780 v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/core.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         try!(self.host.init());
[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/hosts.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(export.flush());
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut export = try!(fso.open("/sys/class/gpio/export"));
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             try!(export.write_all(b"7"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             try!(export.write_all(b"8"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             try!(export.write_all(b"25"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             try!(export.write_all(b"24"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             try!(export.write_all(b"23"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |             try!(export.write_all(b"18"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |             self.rs = Some(try!(fso.open(gpio7)));
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:72:32
[INFO] [stdout]    |
[INFO] [stdout] 72 |             self.enable = Some(try!(fso.open(gpio8)));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:76:31
[INFO] [stdout]    |
[INFO] [stdout] 76 |             self.data4 = Some(try!(fso.open(gpio25)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:80:31
[INFO] [stdout]    |
[INFO] [stdout] 80 |             self.data5 = Some(try!(fso.open(gpio24)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:84:31
[INFO] [stdout]    |
[INFO] [stdout] 84 |             self.data6 = Some(try!(fso.open(gpio23)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:88:31
[INFO] [stdout]    |
[INFO] [stdout] 88 |             self.data7 = Some(try!(fso.open(gpio18)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         try!(file.write_all(b"out"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |         try!(file.flush());
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio7/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio8/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio25/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio24/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio23/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio18/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:102:29
[INFO] [stdout]     |
[INFO] [stdout] 102 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio7/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:103:29
[INFO] [stdout]     |
[INFO] [stdout] 103 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio8/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:104:29
[INFO] [stdout]     |
[INFO] [stdout] 104 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio25/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio24/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:106:29
[INFO] [stdout]     |
[INFO] [stdout] 106 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio23/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:107:29
[INFO] [stdout]     |
[INFO] [stdout] 107 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio18/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         try!(self.try_open_io());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         try!(self.init_gpio());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         try!(self.try_open_io());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         try!(self.init_out_dir());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 |     host: Box<HD44780Host>
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     host: Box<HD44780Host>
[INFO] [stdout] 12 +     host: Box<dyn HD44780Host>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:16:23
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(h: Box<HD44780Host>) -> HD44780 {
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     pub fn new(h: Box<HD44780Host>) -> HD44780 {
[INFO] [stdout] 16 +     pub fn new(h: Box<dyn HD44780Host>) -> HD44780 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "27414a65f97b8ea745fa20eeff30b0ca35cc3e0fe6b5da4284154e1f97903c89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27414a65f97b8ea745fa20eeff30b0ca35cc3e0fe6b5da4284154e1f97903c89", kill_on_drop: false }`
[INFO] [stdout] 27414a65f97b8ea745fa20eeff30b0ca35cc3e0fe6b5da4284154e1f97903c89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e474f03ab5eb01c6c85850341dd8ec7edf59809b2adf363cae6420bfb5e86e34
[INFO] running `Command { std: "docker" "start" "-a" "e474f03ab5eb01c6c85850341dd8ec7edf59809b2adf363cae6420bfb5e86e34", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/core.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         try!(self.host.init());
[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/hosts.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(export.flush());
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling hd44780 v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut export = try!(fso.open("/sys/class/gpio/export"));
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             try!(export.write_all(b"7"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             try!(export.write_all(b"8"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             try!(export.write_all(b"25"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             try!(export.write_all(b"24"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             try!(export.write_all(b"23"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |             try!(export.write_all(b"18"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |             self.rs = Some(try!(fso.open(gpio7)));
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:72:32
[INFO] [stdout]    |
[INFO] [stdout] 72 |             self.enable = Some(try!(fso.open(gpio8)));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:76:31
[INFO] [stdout]    |
[INFO] [stdout] 76 |             self.data4 = Some(try!(fso.open(gpio25)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:80:31
[INFO] [stdout]    |
[INFO] [stdout] 80 |             self.data5 = Some(try!(fso.open(gpio24)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:84:31
[INFO] [stdout]    |
[INFO] [stdout] 84 |             self.data6 = Some(try!(fso.open(gpio23)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:88:31
[INFO] [stdout]    |
[INFO] [stdout] 88 |             self.data7 = Some(try!(fso.open(gpio18)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         try!(file.write_all(b"out"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |         try!(file.flush());
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio7/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio8/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio25/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio24/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio23/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio18/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:102:29
[INFO] [stdout]     |
[INFO] [stdout] 102 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio7/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:103:29
[INFO] [stdout]     |
[INFO] [stdout] 103 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio8/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:104:29
[INFO] [stdout]     |
[INFO] [stdout] 104 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio25/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio24/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:106:29
[INFO] [stdout]     |
[INFO] [stdout] 106 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio23/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:107:29
[INFO] [stdout]     |
[INFO] [stdout] 107 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio18/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         try!(self.try_open_io());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         try!(self.init_gpio());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         try!(self.try_open_io());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         try!(self.init_out_dir());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 |     host: Box<HD44780Host>
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     host: Box<HD44780Host>
[INFO] [stdout] 12 +     host: Box<dyn HD44780Host>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:16:23
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(h: Box<HD44780Host>) -> HD44780 {
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     pub fn new(h: Box<HD44780Host>) -> HD44780 {
[INFO] [stdout] 16 +     pub fn new(h: Box<dyn HD44780Host>) -> HD44780 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/core.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         try!(self.host.init());
[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/hosts.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 59 |         try!(export.flush());
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 |         let mut export = try!(fso.open("/sys/class/gpio/export"));
[INFO] [stdout]    |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |             try!(export.write_all(b"7"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 45 |             try!(export.write_all(b"8"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:48:13
[INFO] [stdout]    |
[INFO] [stdout] 48 |             try!(export.write_all(b"25"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |             try!(export.write_all(b"24"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             try!(export.write_all(b"23"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |             try!(export.write_all(b"18"));
[INFO] [stdout]    |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |             self.rs = Some(try!(fso.open(gpio7)));
[INFO] [stdout]    |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:72:32
[INFO] [stdout]    |
[INFO] [stdout] 72 |             self.enable = Some(try!(fso.open(gpio8)));
[INFO] [stdout]    |                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:76:31
[INFO] [stdout]    |
[INFO] [stdout] 76 |             self.data4 = Some(try!(fso.open(gpio25)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:80:31
[INFO] [stdout]    |
[INFO] [stdout] 80 |             self.data5 = Some(try!(fso.open(gpio24)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:84:31
[INFO] [stdout]    |
[INFO] [stdout] 84 |             self.data6 = Some(try!(fso.open(gpio23)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:88:31
[INFO] [stdout]    |
[INFO] [stdout] 88 |             self.data7 = Some(try!(fso.open(gpio18)));
[INFO] [stdout]    |                               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         try!(file.write_all(b"out"));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/hosts.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |         try!(file.flush());
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio7/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:103:9
[INFO] [stdout]     |
[INFO] [stdout] 103 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio8/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:104:9
[INFO] [stdout]     |
[INFO] [stdout] 104 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio25/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio24/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio23/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio18/direction"))));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:102:29
[INFO] [stdout]     |
[INFO] [stdout] 102 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio7/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:103:29
[INFO] [stdout]     |
[INFO] [stdout] 103 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio8/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:104:29
[INFO] [stdout]     |
[INFO] [stdout] 104 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio25/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio24/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:106:29
[INFO] [stdout]     |
[INFO] [stdout] 106 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio23/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:107:29
[INFO] [stdout]     |
[INFO] [stdout] 107 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio18/direction"))));
[INFO] [stdout]     |                             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         try!(self.try_open_io());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |         try!(self.init_gpio());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |         try!(self.try_open_io());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/hosts.rs:131:9
[INFO] [stdout]     |
[INFO] [stdout] 131 |         try!(self.init_out_dir());
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 |     host: Box<HD44780Host>
[INFO] [stdout]    |               ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 -     host: Box<HD44780Host>
[INFO] [stdout] 12 +     host: Box<dyn HD44780Host>
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:16:23
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(h: Box<HD44780Host>) -> HD44780 {
[INFO] [stdout]    |                       ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 -     pub fn new(h: Box<HD44780Host>) -> HD44780 {
[INFO] [stdout] 16 +     pub fn new(h: Box<dyn HD44780Host>) -> HD44780 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 35 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "e474f03ab5eb01c6c85850341dd8ec7edf59809b2adf363cae6420bfb5e86e34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e474f03ab5eb01c6c85850341dd8ec7edf59809b2adf363cae6420bfb5e86e34", kill_on_drop: false }`
[INFO] [stdout] e474f03ab5eb01c6c85850341dd8ec7edf59809b2adf363cae6420bfb5e86e34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-22/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 52432d7de88b9ffebdc7b29afda76ab761fd8def071325ee36c8bd08f1da78a0
[INFO] running `Command { std: "docker" "start" "-a" "52432d7de88b9ffebdc7b29afda76ab761fd8def071325ee36c8bd08f1da78a0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/core.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         try!(self.host.init());
[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/hosts.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         try!(export.flush());
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:40:26
[INFO] [stderr]    |
[INFO] [stderr] 40 |         let mut export = try!(fso.open("/sys/class/gpio/export"));
[INFO] [stderr]    |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:42:13
[INFO] [stderr]    |
[INFO] [stderr] 42 |             try!(export.write_all(b"7"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |             try!(export.write_all(b"8"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:48:13
[INFO] [stderr]    |
[INFO] [stderr] 48 |             try!(export.write_all(b"25"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:51:13
[INFO] [stderr]    |
[INFO] [stderr] 51 |             try!(export.write_all(b"24"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             try!(export.write_all(b"23"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |             try!(export.write_all(b"18"));
[INFO] [stderr]    |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:68:28
[INFO] [stderr]    |
[INFO] [stderr] 68 |             self.rs = Some(try!(fso.open(gpio7)));
[INFO] [stderr]    |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:72:32
[INFO] [stderr]    |
[INFO] [stderr] 72 |             self.enable = Some(try!(fso.open(gpio8)));
[INFO] [stderr]    |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:76:31
[INFO] [stderr]    |
[INFO] [stderr] 76 |             self.data4 = Some(try!(fso.open(gpio25)));
[INFO] [stderr]    |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:80:31
[INFO] [stderr]    |
[INFO] [stderr] 80 |             self.data5 = Some(try!(fso.open(gpio24)));
[INFO] [stderr]    |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:84:31
[INFO] [stderr]    |
[INFO] [stderr] 84 |             self.data6 = Some(try!(fso.open(gpio23)));
[INFO] [stderr]    |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:88:31
[INFO] [stderr]    |
[INFO] [stderr] 88 |             self.data7 = Some(try!(fso.open(gpio18)));
[INFO] [stderr]    |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |         try!(file.write_all(b"out"));
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/hosts.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         try!(file.flush());
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:102:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio7/direction"))));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 103 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio8/direction"))));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:104:9
[INFO] [stderr]     |
[INFO] [stderr] 104 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio25/direction"))));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio24/direction"))));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:106:9
[INFO] [stderr]     |
[INFO] [stderr] 106 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio23/direction"))));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio18/direction"))));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:102:29
[INFO] [stderr]     |
[INFO] [stderr] 102 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio7/direction"))));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:103:29
[INFO] [stderr]     |
[INFO] [stderr] 103 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio8/direction"))));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:104:29
[INFO] [stderr]     |
[INFO] [stderr] 104 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio25/direction"))));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:105:29
[INFO] [stderr]     |
[INFO] [stderr] 105 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio24/direction"))));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:106:29
[INFO] [stderr]     |
[INFO] [stderr] 106 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio23/direction"))));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:107:29
[INFO] [stderr]     |
[INFO] [stderr] 107 |         try!(self.write_out(try!(fso.open("/sys/class/gpio/gpio18/direction"))));
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |         try!(self.try_open_io());
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |         try!(self.init_gpio());
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |         try!(self.try_open_io());
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/hosts.rs:131:9
[INFO] [stderr]     |
[INFO] [stderr] 131 |         try!(self.init_out_dir());
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/core.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 |     host: Box<HD44780Host>
[INFO] [stderr]    |               ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 12 -     host: Box<HD44780Host>
[INFO] [stderr] 12 +     host: Box<dyn HD44780Host>
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/core.rs:16:23
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new(h: Box<HD44780Host>) -> HD44780 {
[INFO] [stderr]    |                       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 16 -     pub fn new(h: Box<HD44780Host>) -> HD44780 {
[INFO] [stderr] 16 +     pub fn new(h: Box<dyn HD44780Host>) -> HD44780 {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `hd44780` (lib) generated 35 warnings
[INFO] [stderr] warning: `hd44780` (lib test) generated 35 warnings (35 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hd44780-c28d6bc22be49b49)
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/hd44780-dfa00165cae1abce)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests hd44780
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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] [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" "52432d7de88b9ffebdc7b29afda76ab761fd8def071325ee36c8bd08f1da78a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52432d7de88b9ffebdc7b29afda76ab761fd8def071325ee36c8bd08f1da78a0", kill_on_drop: false }`
[INFO] [stdout] 52432d7de88b9ffebdc7b29afda76ab761fd8def071325ee36c8bd08f1da78a0