[INFO] updating cached repository https://github.com/flavius/playground
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b05c504c9696591db10de3235818bd6bda6d13b2
[INFO] checking flavius/playground against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fflavius%2Fplayground" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/flavius/playground on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/flavius/playground
[INFO] finished tweaking git repo https://github.com/flavius/playground
[INFO] tweaked toml for git repo https://github.com/flavius/playground written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/flavius/playground already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1534073f0a745c4c7fe6fbfed652d2733a1802da5ca562fa41887063073eb6e9
[INFO] running `"docker" "start" "-a" "1534073f0a745c4c7fe6fbfed652d2733a1802da5ca562fa41887063073eb6e9"`
[INFO] [stderr]     Checking rust-ddd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:55:36
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn sort_specifications(specs: Vec<&PluginSpecification>) -> Vec<&PluginSpecification> {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[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/main.rs:55:66
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn sort_specifications(specs: Vec<&PluginSpecification>) -> Vec<&PluginSpecification> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:222:21
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let deps : Vec<&PluginSpecification> = vec![
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:55:36
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn sort_specifications(specs: Vec<&PluginSpecification>) -> Vec<&PluginSpecification> {
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[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/main.rs:55:66
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn sort_specifications(specs: Vec<&PluginSpecification>) -> Vec<&PluginSpecification> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:222:21
[INFO] [stderr]     |
[INFO] [stderr] 222 |     let deps : Vec<&PluginSpecification> = vec![
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn PluginSpecification`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sorted_specs`
[INFO] [stderr]    --> src/main.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 |     let sorted_specs = sort_specifications(deps);
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_specs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:125:12
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:155:12
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:190:12
[INFO] [stderr]     |
[INFO] [stderr] 190 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut sorted = vec![];
[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: method `addDependency` should have a snake case name
[INFO] [stderr]   --> src/main.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn addDependency(&mut self, what: usize, dependency: usize) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `add_dependency`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sorted_specs`
[INFO] [stderr]    --> src/main.rs:228:9
[INFO] [stderr]     |
[INFO] [stderr] 228 |     let sorted_specs = sort_specifications(deps);
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_specs`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:125:12
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:155:12
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `deps`
[INFO] [stderr]    --> src/main.rs:190:12
[INFO] [stderr]     |
[INFO] [stderr] 190 |     fn new(deps: Self::Specification) -> Self {
[INFO] [stderr]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_deps`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     let mut sorted = vec![];
[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: method `addDependency` should have a snake case name
[INFO] [stderr]   --> src/main.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn addDependency(&mut self, what: usize, dependency: usize) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^^ help: convert the identifier to snake case: `add_dependency`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "1534073f0a745c4c7fe6fbfed652d2733a1802da5ca562fa41887063073eb6e9"`
[INFO] running `"docker" "rm" "-f" "1534073f0a745c4c7fe6fbfed652d2733a1802da5ca562fa41887063073eb6e9"`
[INFO] [stdout] 1534073f0a745c4c7fe6fbfed652d2733a1802da5ca562fa41887063073eb6e9