[INFO] fetching crate lmdb-rs-m 0.7.7...
[INFO] checking lmdb-rs-m-0.7.7 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate lmdb-rs-m 0.7.7 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate lmdb-rs-m 0.7.7 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lmdb-rs-m 0.7.7
[INFO] finished tweaking crates.io crate lmdb-rs-m 0.7.7
[INFO] tweaked toml for crates.io crate lmdb-rs-m 0.7.7 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded liblmdb-sys-m v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8f1536b4a4b53fff9b6ea007fb5355d2501edf6b069c86383fffd72eea97cabb
[INFO] running `Command { std: "docker" "start" "-a" "8f1536b4a4b53fff9b6ea007fb5355d2501edf6b069c86383fffd72eea97cabb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f1536b4a4b53fff9b6ea007fb5355d2501edf6b069c86383fffd72eea97cabb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f1536b4a4b53fff9b6ea007fb5355d2501edf6b069c86383fffd72eea97cabb", kill_on_drop: false }`
[INFO] [stdout] 8f1536b4a4b53fff9b6ea007fb5355d2501edf6b069c86383fffd72eea97cabb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc5475d96943d9271b27232aead0df6219a8b65740f9bf63133fd7441d4b405f
[INFO] running `Command { std: "docker" "start" "-a" "dc5475d96943d9271b27232aead0df6219a8b65740f9bf63133fd7441d4b405f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]    Compiling liblmdb-sys-m v0.2.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking lmdb-rs-m v0.7.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/core.rs:100:1
[INFO] [stdout]     |
[INFO] [stdout] 100 | / macro_rules! assert_state_not {
[INFO] [stdout] 101 | |     ($log:ident, $cur:expr, $exp:expr) =>
[INFO] [stdout] 102 | |         ({
[INFO] [stdout] 103 | |             let c = $cur;
[INFO] [stdout] ...   |
[INFO] [stdout] 110 | |             }})
[INFO] [stdout] 111 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:179:1
[INFO] [stdout]     |
[INFO] [stdout] 179 | / bitflags! {
[INFO] [stdout] 180 | |     #[doc = "A set of environment flags which could be changed after opening"]
[INFO] [stdout] 181 | |
[INFO] [stdout] 182 | |     pub flags EnvFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 241 | |     }
[INFO] [stdout] 242 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:179:1
[INFO] [stdout]     |
[INFO] [stdout] 179 | / bitflags! {
[INFO] [stdout] 180 | |     #[doc = "A set of environment flags which could be changed after opening"]
[INFO] [stdout] 181 | |
[INFO] [stdout] 182 | |     pub flags EnvFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 241 | |     }
[INFO] [stdout] 242 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:179:1
[INFO] [stdout]     |
[INFO] [stdout] 179 | / bitflags! {
[INFO] [stdout] 180 | |     #[doc = "A set of environment flags which could be changed after opening"]
[INFO] [stdout] 181 | |
[INFO] [stdout] 182 | |     pub flags EnvFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 241 | |     }
[INFO] [stdout] 242 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/core.rs:100:1
[INFO] [stdout]     |
[INFO] [stdout] 100 | / macro_rules! assert_state_not {
[INFO] [stdout] 101 | |     ($log:ident, $cur:expr, $exp:expr) =>
[INFO] [stdout] 102 | |         ({
[INFO] [stdout] 103 | |             let c = $cur;
[INFO] [stdout] ...   |
[INFO] [stdout] 110 | |             }})
[INFO] [stdout] 111 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:179:1
[INFO] [stdout]     |
[INFO] [stdout] 179 | / bitflags! {
[INFO] [stdout] 180 | |     #[doc = "A set of environment flags which could be changed after opening"]
[INFO] [stdout] 181 | |
[INFO] [stdout] 182 | |     pub flags EnvFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 241 | |     }
[INFO] [stdout] 242 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:179:1
[INFO] [stdout]     |
[INFO] [stdout] 179 | / bitflags! {
[INFO] [stdout] 180 | |     #[doc = "A set of environment flags which could be changed after opening"]
[INFO] [stdout] 181 | |
[INFO] [stdout] 182 | |     pub flags EnvFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 241 | |     }
[INFO] [stdout] 242 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:244:1
[INFO] [stdout]     |
[INFO] [stdout] 244 | / bitflags! {
[INFO] [stdout] 245 | |     #[doc = "A set of all environment flags"]
[INFO] [stdout] 246 | |
[INFO] [stdout] 247 | |     pub flags EnvCreateFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 347 | |     }
[INFO] [stdout] 348 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:244:1
[INFO] [stdout]     |
[INFO] [stdout] 244 | / bitflags! {
[INFO] [stdout] 245 | |     #[doc = "A set of all environment flags"]
[INFO] [stdout] 246 | |
[INFO] [stdout] 247 | |     pub flags EnvCreateFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 347 | |     }
[INFO] [stdout] 348 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:179:1
[INFO] [stdout]     |
[INFO] [stdout] 179 | / bitflags! {
[INFO] [stdout] 180 | |     #[doc = "A set of environment flags which could be changed after opening"]
[INFO] [stdout] 181 | |
[INFO] [stdout] 182 | |     pub flags EnvFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 241 | |     }
[INFO] [stdout] 242 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:244:1
[INFO] [stdout]     |
[INFO] [stdout] 244 | / bitflags! {
[INFO] [stdout] 245 | |     #[doc = "A set of all environment flags"]
[INFO] [stdout] 246 | |
[INFO] [stdout] 247 | |     pub flags EnvCreateFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 347 | |     }
[INFO] [stdout] 348 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:350:1
[INFO] [stdout]     |
[INFO] [stdout] 350 | / bitflags! {
[INFO] [stdout] 351 | |     #[doc = "A set of database flags"]
[INFO] [stdout] 352 | |
[INFO] [stdout] 353 | |     pub flags DbFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 385 | |     }
[INFO] [stdout] 386 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:244:1
[INFO] [stdout]     |
[INFO] [stdout] 244 | / bitflags! {
[INFO] [stdout] 245 | |     #[doc = "A set of all environment flags"]
[INFO] [stdout] 246 | |
[INFO] [stdout] 247 | |     pub flags EnvCreateFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 347 | |     }
[INFO] [stdout] 348 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:350:1
[INFO] [stdout]     |
[INFO] [stdout] 350 | / bitflags! {
[INFO] [stdout] 351 | |     #[doc = "A set of database flags"]
[INFO] [stdout] 352 | |
[INFO] [stdout] 353 | |     pub flags DbFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 385 | |     }
[INFO] [stdout] 386 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:409:54
[INFO] [stdout]     |
[INFO] [stdout] 409 |     pub fn get<V: FromMdbValue + 'a>(&'a self, key: &ToMdbValue) -> MdbResult<V> {
[INFO] [stdout]     |                                                      ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:414:29
[INFO] [stdout]     |
[INFO] [stdout] 414 |     pub fn set(&self, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                             ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:414:49
[INFO] [stdout]     |
[INFO] [stdout] 414 |     pub fn set(&self, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:433:32
[INFO] [stdout]     |
[INFO] [stdout] 433 |     pub fn insert(&self, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:433:52
[INFO] [stdout]     |
[INFO] [stdout] 433 |     pub fn insert(&self, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                                    ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:438:29
[INFO] [stdout]     |
[INFO] [stdout] 438 |     pub fn del(&self, key: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                             ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:443:34
[INFO] [stdout]     |
[INFO] [stdout] 443 |     pub fn del_item(&self, key: &ToMdbValue, data: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                  ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:443:53
[INFO] [stdout]     |
[INFO] [stdout] 443 |     pub fn del_item(&self, key: &ToMdbValue, data: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:470:22
[INFO] [stdout]     |
[INFO] [stdout] 470 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:478:22
[INFO] [stdout]     |
[INFO] [stdout] 478 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:489:22
[INFO] [stdout]     |
[INFO] [stdout] 489 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:502:22
[INFO] [stdout]     |
[INFO] [stdout] 502 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:510:22
[INFO] [stdout]     |
[INFO] [stdout] 510 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:634:21
[INFO] [stdout]     |
[INFO] [stdout] 634 |             let _ = try!(EnvBuilder::check_path(&path, self.flags));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:350:1
[INFO] [stdout]     |
[INFO] [stdout] 350 | / bitflags! {
[INFO] [stdout] 351 | |     #[doc = "A set of database flags"]
[INFO] [stdout] 352 | |
[INFO] [stdout] 353 | |     pub flags DbFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 385 | |     }
[INFO] [stdout] 386 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:642:28
[INFO] [stdout]     |
[INFO] [stdout] 642 |             let path_str = try!(path.as_ref().to_str().ok_or(MdbError::InvalidPath));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:643:26
[INFO] [stdout]     |
[INFO] [stdout] 643 |             let c_path = try!(CString::new(path_str).map_err(|_| MdbError::InvalidPath));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:769:19
[INFO] [stdout]     |
[INFO] [stdout] 769 |         let tmp = try!(self.get_all_flags());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:807:24
[INFO] [stdout]     |
[INFO] [stdout] 807 |         let path_str = try!(path.as_ref().to_str().ok_or(MdbError::InvalidPath));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:808:22
[INFO] [stdout]     |
[INFO] [stdout] 808 |         let c_path = try!(CString::new(path_str).map_err(|_| MdbError::InvalidPath));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:883:17
[INFO] [stdout]     |
[INFO] [stdout] 883 |                 try!(txn.commit());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:866:21
[INFO] [stdout]     |
[INFO] [stdout] 866 |                     try!(self.create_transaction(None, txflags))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:897:18
[INFO] [stdout]     |
[INFO] [stdout] 897 |         let db = try!(self._open_db(db_name, flags, false));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:903:18
[INFO] [stdout]     |
[INFO] [stdout] 903 |         let db = try!(self._open_db(db_name, flags, true));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1056:74
[INFO] [stdout]      |
[INFO] [stdout] 1056 |     fn get_value<V: FromMdbValue + 'a>(&'a self, db: ffi::MDB_dbi, key: &ToMdbValue) -> MdbResult<V> {
[INFO] [stdout]      |                                                                          ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1065:68
[INFO] [stdout]      |
[INFO] [stdout] 1065 |     fn get<V: FromMdbValue + 'a>(&'a self, db: ffi::MDB_dbi, key: &ToMdbValue) -> MdbResult<V> {
[INFO] [stdout]      |                                                                    ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1070:49
[INFO] [stdout]      |
[INFO] [stdout] 1070 |     fn set_value(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1070:69
[INFO] [stdout]      |
[INFO] [stdout] 1070 |     fn set_value(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                     ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1074:60
[INFO] [stdout]      |
[INFO] [stdout] 1074 |     fn set_value_with_flags(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue, flags: c_uint) -> MdbResult<()> {
[INFO] [stdout]      |                                                            ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1074:80
[INFO] [stdout]      |
[INFO] [stdout] 1074 |     fn set_value_with_flags(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue, flags: c_uint) -> MdbResult<()> {
[INFO] [stdout]      |                                                                                ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1087:43
[INFO] [stdout]      |
[INFO] [stdout] 1087 |     fn set(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                           ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1087:63
[INFO] [stdout]      |
[INFO] [stdout] 1087 |     fn set(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                               ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1092:46
[INFO] [stdout]      |
[INFO] [stdout] 1092 |     fn append(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                              ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1092:66
[INFO] [stdout]      |
[INFO] [stdout] 1092 |     fn append(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1097:56
[INFO] [stdout]      |
[INFO] [stdout] 1097 |     fn append_duplicate(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                        ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1097:76
[INFO] [stdout]      |
[INFO] [stdout] 1097 |     fn append_duplicate(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                            ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1104:46
[INFO] [stdout]      |
[INFO] [stdout] 1104 |     fn insert(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                              ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:350:1
[INFO] [stdout]     |
[INFO] [stdout] 350 | / bitflags! {
[INFO] [stdout] 351 | |     #[doc = "A set of database flags"]
[INFO] [stdout] 352 | |
[INFO] [stdout] 353 | |     pub flags DbFlags: c_uint {
[INFO] [stdout] ...   |
[INFO] [stdout] 385 | |     }
[INFO] [stdout] 386 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1104:66
[INFO] [stdout]      |
[INFO] [stdout] 1104 |     fn insert(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1110:49
[INFO] [stdout]      |
[INFO] [stdout] 1110 |     fn del_value(&self, db: ffi::MDB_dbi, key: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:409:54
[INFO] [stdout]     |
[INFO] [stdout] 409 |     pub fn get<V: FromMdbValue + 'a>(&'a self, key: &ToMdbValue) -> MdbResult<V> {
[INFO] [stdout]     |                                                      ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1118:48
[INFO] [stdout]      |
[INFO] [stdout] 1118 |     fn del_item(&self, db: ffi::MDB_dbi, key: &ToMdbValue, data: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:414:29
[INFO] [stdout]     |
[INFO] [stdout] 414 |     pub fn set(&self, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                             ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1118:67
[INFO] [stdout]      |
[INFO] [stdout] 1118 |     fn del_item(&self, db: ffi::MDB_dbi, key: &ToMdbValue, data: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                   ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1129:43
[INFO] [stdout]      |
[INFO] [stdout] 1129 |     fn del(&self, db: ffi::MDB_dbi, key: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                           ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1416:22
[INFO] [stdout]      |
[INFO] [stdout] 1416 |         let (k, v) = try!(self.get_plain());
[INFO] [stdout]      |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1426:22
[INFO] [stdout]      |
[INFO] [stdout] 1426 |         let (_, v) = try!(self.get_plain());
[INFO] [stdout]      |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1435:22
[INFO] [stdout]      |
[INFO] [stdout] 1435 |         let (k, _) = try!(self.get_plain());
[INFO] [stdout]      |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1445:22
[INFO] [stdout]      |
[INFO] [stdout] 1445 |         let (k, _) = try!(self.get_plain());
[INFO] [stdout]      |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1474:9
[INFO] [stdout]      |
[INFO] [stdout] 1474 |         try!(self.ensure_key_valid());
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1492:9
[INFO] [stdout]      |
[INFO] [stdout] 1492 |         try!(self.ensure_key_valid());
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1573:9
[INFO] [stdout]      |
[INFO] [stdout] 1573 |         try!(self.cursor.to_key(self.key));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1582:9
[INFO] [stdout]      |
[INFO] [stdout] 1582 |         try!(self.cursor.to_item(self.key, v));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1587:9
[INFO] [stdout]      |
[INFO] [stdout] 1587 |         try!(self.cursor.to_key(self.key));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:414:49
[INFO] [stdout]     |
[INFO] [stdout] 414 |     pub fn set(&self, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:433:32
[INFO] [stdout]     |
[INFO] [stdout] 433 |     pub fn insert(&self, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:433:52
[INFO] [stdout]     |
[INFO] [stdout] 433 |     pub fn insert(&self, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                                    ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:438:29
[INFO] [stdout]     |
[INFO] [stdout] 438 |     pub fn del(&self, key: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                             ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:443:34
[INFO] [stdout]     |
[INFO] [stdout] 443 |     pub fn del_item(&self, key: &ToMdbValue, data: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                  ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/core.rs:443:53
[INFO] [stdout]     |
[INFO] [stdout] 443 |     pub fn del_item(&self, key: &ToMdbValue, data: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]     |                                                     ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:470:22
[INFO] [stdout]     |
[INFO] [stdout] 470 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:478:22
[INFO] [stdout]     |
[INFO] [stdout] 478 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:489:22
[INFO] [stdout]     |
[INFO] [stdout] 489 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:502:22
[INFO] [stdout]     |
[INFO] [stdout] 502 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:510:22
[INFO] [stdout]     |
[INFO] [stdout] 510 |         let cursor = try!(self.txn.new_cursor(self.handle));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:634:21
[INFO] [stdout]     |
[INFO] [stdout] 634 |             let _ = try!(EnvBuilder::check_path(&path, self.flags));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:642:28
[INFO] [stdout]     |
[INFO] [stdout] 642 |             let path_str = try!(path.as_ref().to_str().ok_or(MdbError::InvalidPath));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:643:26
[INFO] [stdout]     |
[INFO] [stdout] 643 |             let c_path = try!(CString::new(path_str).map_err(|_| MdbError::InvalidPath));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:769:19
[INFO] [stdout]     |
[INFO] [stdout] 769 |         let tmp = try!(self.get_all_flags());
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:807:24
[INFO] [stdout]     |
[INFO] [stdout] 807 |         let path_str = try!(path.as_ref().to_str().ok_or(MdbError::InvalidPath));
[INFO] [stdout]     |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:808:22
[INFO] [stdout]     |
[INFO] [stdout] 808 |         let c_path = try!(CString::new(path_str).map_err(|_| MdbError::InvalidPath));
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:883:17
[INFO] [stdout]     |
[INFO] [stdout] 883 |                 try!(txn.commit());
[INFO] [stdout]     |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:866:21
[INFO] [stdout]     |
[INFO] [stdout] 866 |                     try!(self.create_transaction(None, txflags))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:897:18
[INFO] [stdout]     |
[INFO] [stdout] 897 |         let db = try!(self._open_db(db_name, flags, false));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/core.rs:903:18
[INFO] [stdout]     |
[INFO] [stdout] 903 |         let db = try!(self._open_db(db_name, flags, true));
[INFO] [stdout]     |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1056:74
[INFO] [stdout]      |
[INFO] [stdout] 1056 |     fn get_value<V: FromMdbValue + 'a>(&'a self, db: ffi::MDB_dbi, key: &ToMdbValue) -> MdbResult<V> {
[INFO] [stdout]      |                                                                          ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1065:68
[INFO] [stdout]      |
[INFO] [stdout] 1065 |     fn get<V: FromMdbValue + 'a>(&'a self, db: ffi::MDB_dbi, key: &ToMdbValue) -> MdbResult<V> {
[INFO] [stdout]      |                                                                    ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1070:49
[INFO] [stdout]      |
[INFO] [stdout] 1070 |     fn set_value(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1070:69
[INFO] [stdout]      |
[INFO] [stdout] 1070 |     fn set_value(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                     ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1074:60
[INFO] [stdout]      |
[INFO] [stdout] 1074 |     fn set_value_with_flags(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue, flags: c_uint) -> MdbResult<()> {
[INFO] [stdout]      |                                                            ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1074:80
[INFO] [stdout]      |
[INFO] [stdout] 1074 |     fn set_value_with_flags(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue, flags: c_uint) -> MdbResult<()> {
[INFO] [stdout]      |                                                                                ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1087:43
[INFO] [stdout]      |
[INFO] [stdout] 1087 |     fn set(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                           ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1087:63
[INFO] [stdout]      |
[INFO] [stdout] 1087 |     fn set(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                               ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1092:46
[INFO] [stdout]      |
[INFO] [stdout] 1092 |     fn append(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                              ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1092:66
[INFO] [stdout]      |
[INFO] [stdout] 1092 |     fn append(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1097:56
[INFO] [stdout]      |
[INFO] [stdout] 1097 |     fn append_duplicate(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                        ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1097:76
[INFO] [stdout]      |
[INFO] [stdout] 1097 |     fn append_duplicate(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                            ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1104:46
[INFO] [stdout]      |
[INFO] [stdout] 1104 |     fn insert(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                              ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1104:66
[INFO] [stdout]      |
[INFO] [stdout] 1104 |     fn insert(&self, db: ffi::MDB_dbi, key: &ToMdbValue, value: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                  ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1110:49
[INFO] [stdout]      |
[INFO] [stdout] 1110 |     fn del_value(&self, db: ffi::MDB_dbi, key: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                 ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1118:48
[INFO] [stdout]      |
[INFO] [stdout] 1118 |     fn del_item(&self, db: ffi::MDB_dbi, key: &ToMdbValue, data: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1118:67
[INFO] [stdout]      |
[INFO] [stdout] 1118 |     fn del_item(&self, db: ffi::MDB_dbi, key: &ToMdbValue, data: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                                                   ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/core.rs:1129:43
[INFO] [stdout]      |
[INFO] [stdout] 1129 |     fn del(&self, db: ffi::MDB_dbi, key: &ToMdbValue) -> MdbResult<()> {
[INFO] [stdout]      |                                           ^^^^^^^^^^ help: use `dyn`: `dyn ToMdbValue`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1416:22
[INFO] [stdout]      |
[INFO] [stdout] 1416 |         let (k, v) = try!(self.get_plain());
[INFO] [stdout]      |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1426:22
[INFO] [stdout]      |
[INFO] [stdout] 1426 |         let (_, v) = try!(self.get_plain());
[INFO] [stdout]      |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1435:22
[INFO] [stdout]      |
[INFO] [stdout] 1435 |         let (k, _) = try!(self.get_plain());
[INFO] [stdout]      |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1445:22
[INFO] [stdout]      |
[INFO] [stdout] 1445 |         let (k, _) = try!(self.get_plain());
[INFO] [stdout]      |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1474:9
[INFO] [stdout]      |
[INFO] [stdout] 1474 |         try!(self.ensure_key_valid());
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1492:9
[INFO] [stdout]      |
[INFO] [stdout] 1492 |         try!(self.ensure_key_valid());
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1573:9
[INFO] [stdout]      |
[INFO] [stdout] 1573 |         try!(self.cursor.to_key(self.key));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1582:9
[INFO] [stdout]      |
[INFO] [stdout] 1582 |         try!(self.cursor.to_item(self.key, v));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/core.rs:1587:9
[INFO] [stdout]      |
[INFO] [stdout] 1587 |         try!(self.cursor.to_key(self.key));
[INFO] [stdout]      |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/tests.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |             try!(db.set(&test_key, &(&test_data[..])));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/tests.rs:4:38
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]  --> src/tests.rs:5:23
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]   |                       ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/tests.rs:16:31
[INFO] [stdout]    |
[INFO] [stdout] 16 | static NEXT_ID: AtomicUsize = ATOMIC_USIZE_INIT;
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/tests.rs:17:30
[INFO] [stdout]    |
[INFO] [stdout] 17 | static INIT_DIR_ONCE: Once = ONCE_INIT;
[INFO] [stdout]    |                              ^^^^^^^^^ help: replace the use of the deprecated constant: `Once::new()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/core.rs:151:75
[INFO] [stdout]     |
[INFO] [stdout] 151 |             &Panic | &InvalidPath | &CacheError => write!(fmt, "{}", self.description()),
[INFO] [stdout]     |                                                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/core.rs:151:75
[INFO] [stdout]     |
[INFO] [stdout] 151 |             &Panic | &InvalidPath | &CacheError => write!(fmt, "{}", self.description()),
[INFO] [stdout]     |                                                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 59 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `lmdb_rs`
[INFO] [stdout]  --> examples/simple.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate lmdb_rs as lmdb;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lmdb-rs-m` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 64 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "dc5475d96943d9271b27232aead0df6219a8b65740f9bf63133fd7441d4b405f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc5475d96943d9271b27232aead0df6219a8b65740f9bf63133fd7441d4b405f", kill_on_drop: false }`
[INFO] [stdout] dc5475d96943d9271b27232aead0df6219a8b65740f9bf63133fd7441d4b405f