[INFO] fetching crate scribe 0.7.2...
[INFO] checking scribe-0.7.2 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate scribe 0.7.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate scribe 0.7.2 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b76baa6dc7df8a8ee2e0afef2dca1ad2cf8e55b1031e12eb7361d446795abc98
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b76baa6dc7df8a8ee2e0afef2dca1ad2cf8e55b1031e12eb7361d446795abc98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b76baa6dc7df8a8ee2e0afef2dca1ad2cf8e55b1031e12eb7361d446795abc98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b76baa6dc7df8a8ee2e0afef2dca1ad2cf8e55b1031e12eb7361d446795abc98", kill_on_drop: false }`
[INFO] [stdout] b76baa6dc7df8a8ee2e0afef2dca1ad2cf8e55b1031e12eb7361d446795abc98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 591ab7ce7c5c36666ae1138f6e1a08fa93308f5d0b4de9b0ab0851898b0081ec
[INFO] running `Command { std: "docker" "start" "-a" "591ab7ce7c5c36666ae1138f6e1a08fa93308f5d0b4de9b0ab0851898b0081ec", 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]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]    Compiling syn v1.0.70
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking gimli v0.23.0
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking rustc-demangle v0.1.18
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking luthor v0.1.7
[INFO] [stderr]     Checking unicode-segmentation v1.0.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking base64 v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling onig_sys v68.2.1
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking addr2line v0.14.1
[INFO] [stderr]     Checking backtrace v0.3.57
[INFO] [stderr]     Checking plist v0.2.4
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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: 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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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] 
[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: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> benches/buffer_tokens.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     workspace.open_buffer(path);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 57.45s
[INFO] running `Command { std: "docker" "inspect" "591ab7ce7c5c36666ae1138f6e1a08fa93308f5d0b4de9b0ab0851898b0081ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "591ab7ce7c5c36666ae1138f6e1a08fa93308f5d0b4de9b0ab0851898b0081ec", kill_on_drop: false }`
[INFO] [stdout] 591ab7ce7c5c36666ae1138f6e1a08fa93308f5d0b4de9b0ab0851898b0081ec