[INFO] fetching crate scribe 0.7.2...
[INFO] checking scribe-0.7.2 against 1.55.0 for beta-1.56-3
[INFO] extracting crate scribe 0.7.2 into /workspace/builds/worker-40/source
[INFO] validating manifest of crates.io crate scribe 0.7.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scribe 0.7.2
[INFO] finished tweaking crates.io crate scribe 0.7.2
[INFO] tweaked toml for crates.io crate scribe 0.7.2 written to /workspace/builds/worker-40/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f8748a56be8507b135acb65bf06cd2db9e6d07ba73afa53103a9c783af2f720
[INFO] running `Command { std: "docker" "start" "-a" "5f8748a56be8507b135acb65bf06cd2db9e6d07ba73afa53103a9c783af2f720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f8748a56be8507b135acb65bf06cd2db9e6d07ba73afa53103a9c783af2f720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f8748a56be8507b135acb65bf06cd2db9e6d07ba73afa53103a9c783af2f720", kill_on_drop: false }`
[INFO] [stdout] 5f8748a56be8507b135acb65bf06cd2db9e6d07ba73afa53103a9c783af2f720
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-40/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 245171161f31bb9dc2450001185baefbf9342cd2ef75e7d0bdf5c312ab7ee671
[INFO] running `Command { std: "docker" "start" "-a" "245171161f31bb9dc2450001185baefbf9342cd2ef75e7d0bdf5c312ab7ee671", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling plist v0.2.4
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking regex-syntax v0.4.2
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[INFO] [stderr]     Checking luthor v0.1.7
[INFO] [stderr]    Compiling onig_sys v68.2.1
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking base64 v0.8.0
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]     Checking serde_json v1.0.68
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking backtrace v0.3.61
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking onig v3.2.2
[INFO] [stderr]     Checking syntect v2.1.0
[INFO] [stderr]     Checking scribe v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/group.rs:15:25
[INFO] [stdout]    |
[INFO] [stdout] 15 |     operations: Vec<Box<Operation>>,
[INFO] [stdout]    |                         ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/group.rs:35:38
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn clone_operation(&self) -> Box<Operation> {
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/group.rs:49:42
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn add(&mut self, operation: Box<Operation>) {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/buffer/operation/history.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 |     previous: Vec<Box<Operation>>,
[INFO] [stdout]   |                       ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/history.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     next: Vec<Box<Operation>>,
[INFO] [stdout]    |                   ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/history.rs:25:42
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn add(&mut self, operation: Box<Operation>) {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/history.rs:38:46
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn previous(&mut self) -> Option<Box<Operation>> {
[INFO] [stdout]    |                                              ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/history.rs:51:42
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn next(&mut self) -> Option<Box<Operation>> {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/buffer/operation/mod.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn run(&mut self, &mut Buffer);
[INFO] [stdout]    |                       ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/buffer/operation/mod.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn reverse(&mut self, &mut Buffer);
[INFO] [stdout]    |                           ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/mod.rs:19:38
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn clone_operation(&self) -> Box<Operation>;
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operations/insert.rs:73:38
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn clone_operation(&self) -> Box<Operation> {
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operations/delete.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn clone_operation(&self) -> Box<Operation> {
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/group.rs:15:25
[INFO] [stdout]    |
[INFO] [stdout] 15 |     operations: Vec<Box<Operation>>,
[INFO] [stdout]    |                         ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/mod.rs:60:37
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub change_callback: Option<Box<Fn(Position)>>,
[INFO] [stdout]    |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Position)`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/buffer/mod.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |             path: Some(try!(path.canonicalize())),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/buffer/mod.rs:327:35
[INFO] [stdout]     |
[INFO] [stdout] 327 |         let operation: Option<Box<Operation>> = match self.operation_group.take() {
[INFO] [stdout]     |                                   ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/workspace.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 |             path: try!(path.canonicalize()),
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/group.rs:35:38
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn clone_operation(&self) -> Box<Operation> {
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/workspace.rs:120:26
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let buffer = try!(Buffer::from_file(path));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/group.rs:49:42
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn add(&mut self, operation: Box<Operation>) {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/buffer/operation/history.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 |     previous: Vec<Box<Operation>>,
[INFO] [stdout]   |                       ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/history.rs:10:19
[INFO] [stdout]    |
[INFO] [stdout] 10 |     next: Vec<Box<Operation>>,
[INFO] [stdout]    |                   ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/history.rs:25:42
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn add(&mut self, operation: Box<Operation>) {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/history.rs:38:46
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn previous(&mut self) -> Option<Box<Operation>> {
[INFO] [stdout]    |                                              ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/history.rs:51:42
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn next(&mut self) -> Option<Box<Operation>> {
[INFO] [stdout]    |                                          ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/buffer/operation/mod.rs:17:23
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn run(&mut self, &mut Buffer);
[INFO] [stdout]    |                       ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/buffer/operation/mod.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn reverse(&mut self, &mut Buffer);
[INFO] [stdout]    |                           ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &mut Buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operation/mod.rs:19:38
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn clone_operation(&self) -> Box<Operation>;
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operations/insert.rs:73:38
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn clone_operation(&self) -> Box<Operation> {
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/operations/delete.rs:44:38
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn clone_operation(&self) -> Box<Operation> {
[INFO] [stdout]    |                                      ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/buffer/mod.rs:60:37
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub change_callback: Option<Box<Fn(Position)>>,
[INFO] [stdout]    |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Position)`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/buffer/mod.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |             path: Some(try!(path.canonicalize())),
[INFO] [stdout]     |                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/buffer/mod.rs:327:35
[INFO] [stdout]     |
[INFO] [stdout] 327 |         let operation: Option<Box<Operation>> = match self.operation_group.take() {
[INFO] [stdout]     |                                   ^^^^^^^^^ help: use `dyn`: `dyn Operation`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/workspace.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 |             path: try!(path.canonicalize()),
[INFO] [stdout]    |                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/workspace.rs:120:26
[INFO] [stdout]     |
[INFO] [stdout] 120 |             let buffer = try!(Buffer::from_file(path));
[INFO] [stdout]     |                          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/buffer_tokens.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `scribe` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "245171161f31bb9dc2450001185baefbf9342cd2ef75e7d0bdf5c312ab7ee671", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "245171161f31bb9dc2450001185baefbf9342cd2ef75e7d0bdf5c312ab7ee671", kill_on_drop: false }`
[INFO] [stdout] 245171161f31bb9dc2450001185baefbf9342cd2ef75e7d0bdf5c312ab7ee671
