[INFO] updating cached repository akr4/pero
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/akr4/pero
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/akr4/pero" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/akr4/pero"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/akr4/pero'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/akr4/pero" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/akr4/pero"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/akr4/pero'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5e40cabe5bedcb432fd7bee1f823a68eb0a88cb0
[INFO] sha for GitHub repo akr4/pero: 5e40cabe5bedcb432fd7bee1f823a68eb0a88cb0
[INFO] validating manifest of akr4/pero on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of akr4/pero on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing akr4/pero
[INFO] finished frobbing akr4/pero
[INFO] frobbed toml for akr4/pero written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/akr4/pero/Cargo.toml
[INFO] started frobbing akr4/pero
[INFO] finished frobbing akr4/pero
[INFO] frobbed toml for akr4/pero written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/akr4/pero/Cargo.toml
[INFO] crate akr4/pero already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking akr4/pero against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/akr4/pero:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2e306439567d2a01af22f46d4851297637ded8de9205c696d8aa21600a7254ae
[INFO] running `"docker" "start" "-a" "2e306439567d2a01af22f46d4851297637ded8de9205c696d8aa21600a7254ae"`
[INFO] [stderr]     Checking colored v1.6.1
[INFO] [stderr]     Checking pero v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/cargo.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn detect(path: &Path) -> Option<Box<project::Project>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cargo.rs:10:53
[INFO] [stderr]    |
[INFO] [stderr] 10 |             .map(|p| Box::new(Cargo::new(p)) as Box<project::Project>),
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/display.rs:5:32
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn print_project(project: &Project) {
[INFO] [stderr]   |                                ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/gradle.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn detect(path: &Path) -> Option<Box<project::Project>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/gradle.rs:10:54
[INFO] [stderr]    |
[INFO] [stderr] 10 |             .map(|p| Box::new(Gradle::new(p)) as Box<project::Project>),
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/maven.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn detect(path: &Path) -> Option<Box<project::Project>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/maven.rs:10:53
[INFO] [stderr]    |
[INFO] [stderr] 10 |             .map(|p| Box::new(Maven::new(p)) as Box<project::Project>),
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/npm.rs:7:42
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn detect(path: &Path) -> Option<Box<Project>> {
[INFO] [stderr]   |                                          ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/npm.rs:12:60
[INFO] [stderr]    |
[INFO] [stderr] 12 |         path.parent().map(|p| Box::new(Npm::new(p)) as Box<Project>)
[INFO] [stderr]    |                                                            ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/sbt.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn detect(path: &Path) -> Option<Box<project::Project>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sbt.rs:10:51
[INFO] [stderr]    |
[INFO] [stderr] 10 |             .map(|p| Box::new(Sbt::new(p)) as Box<project::Project>),
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/statistics.rs:11:39
[INFO] [stderr]    |
[INFO] [stderr] 11 |     ITER: IntoIterator<Item = &'a Box<Project>>,
[INFO] [stderr]    |                                       ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:33:21
[INFO] [stderr]    |
[INFO] [stderr] 33 |     type Item = Box<Project>;
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:50:54
[INFO] [stderr]    |
[INFO] [stderr] 50 | type ProjectDetector = fn(path: &Path) -> Option<Box<Project>>;
[INFO] [stderr]    |                                                      ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:52:46
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn detect_project(path: &Path) -> Option<Box<Project>> {
[INFO] [stderr]    |                                              ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/cargo.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn detect(path: &Path) -> Option<Box<project::Project>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cargo.rs:10:53
[INFO] [stderr]    |
[INFO] [stderr] 10 |             .map(|p| Box::new(Cargo::new(p)) as Box<project::Project>),
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/display.rs:5:32
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn print_project(project: &Project) {
[INFO] [stderr]   |                                ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/gradle.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn detect(path: &Path) -> Option<Box<project::Project>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/gradle.rs:10:54
[INFO] [stderr]    |
[INFO] [stderr] 10 |             .map(|p| Box::new(Gradle::new(p)) as Box<project::Project>),
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/maven.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn detect(path: &Path) -> Option<Box<project::Project>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/maven.rs:10:53
[INFO] [stderr]    |
[INFO] [stderr] 10 |             .map(|p| Box::new(Maven::new(p)) as Box<project::Project>),
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/npm.rs:7:42
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn detect(path: &Path) -> Option<Box<Project>> {
[INFO] [stderr]   |                                          ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/npm.rs:12:60
[INFO] [stderr]    |
[INFO] [stderr] 12 |         path.parent().map(|p| Box::new(Npm::new(p)) as Box<Project>)
[INFO] [stderr]    |                                                            ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/sbt.rs:6:42
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn detect(path: &Path) -> Option<Box<project::Project>> {
[INFO] [stderr]   |                                          ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sbt.rs:10:51
[INFO] [stderr]    |
[INFO] [stderr] 10 |             .map(|p| Box::new(Sbt::new(p)) as Box<project::Project>),
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn project::Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/statistics.rs:11:39
[INFO] [stderr]    |
[INFO] [stderr] 11 |     ITER: IntoIterator<Item = &'a Box<Project>>,
[INFO] [stderr]    |                                       ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/statistics.rs:38:17
[INFO] [stderr]    |
[INFO] [stderr] 38 |     let p1: Box<Project> = Box::new(TestingProject {});
[INFO] [stderr]    |                 ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:33:21
[INFO] [stderr]    |
[INFO] [stderr] 33 |     type Item = Box<Project>;
[INFO] [stderr]    |                     ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:50:54
[INFO] [stderr]    |
[INFO] [stderr] 50 | type ProjectDetector = fn(path: &Path) -> Option<Box<Project>>;
[INFO] [stderr]    |                                                      ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:52:46
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn detect_project(path: &Path) -> Option<Box<Project>> {
[INFO] [stderr]    |                                              ^^^^^^^ help: use `dyn`: `dyn Project`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |         let mut projects = projects_map.entry(type_name).or_insert_with(Vec::new);
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:101:13
[INFO] [stderr]     |
[INFO] [stderr] 101 |         let mut projects = projects_map.entry(type_name).or_insert_with(Vec::new);
[INFO] [stderr]     |             ----^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `"docker" "inspect" "2e306439567d2a01af22f46d4851297637ded8de9205c696d8aa21600a7254ae"`
[INFO] running `"docker" "rm" "-f" "2e306439567d2a01af22f46d4851297637ded8de9205c696d8aa21600a7254ae"`
[INFO] [stdout] 2e306439567d2a01af22f46d4851297637ded8de9205c696d8aa21600a7254ae