[INFO] updating cached repository https://github.com/studoot/duplicate-finder
[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] f1871cb936f41bd21be38188189a825341f7f239
[INFO] checking studoot/duplicate-finder against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstudoot%2Fduplicate-finder" "/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/studoot/duplicate-finder on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/studoot/duplicate-finder
[INFO] finished tweaking git repo https://github.com/studoot/duplicate-finder
[INFO] tweaked toml for git repo https://github.com/studoot/duplicate-finder written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/studoot/duplicate-finder already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] ddcb3162ea834a70f4fa5cb1476aebb4ec388665675353ec616f8423bde11f03
[INFO] running `"docker" "start" "-a" "ddcb3162ea834a70f4fa5cb1476aebb4ec388665675353ec616f8423bde11f03"`
[INFO] [stderr]     Checking libc v0.2.31
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking either v1.2.0
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking futures v0.1.16
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking fnv v1.0.5
[INFO] [stderr]     Checking same-file v0.1.3
[INFO] [stderr]     Checking serde v1.0.15
[INFO] [stderr]     Checking crossbeam v0.2.10
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking thread_local v0.3.4
[INFO] [stderr]     Checking walkdir v1.0.7
[INFO] [stderr]    Compiling structopt-derive v0.1.1
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking rand v0.3.16
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking globset v0.2.0
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]     Checking ignore v0.2.2
[INFO] [stderr]     Checking multimap v0.4.0
[INFO] [stderr]     Checking structopt v0.1.1
[INFO] [stderr]     Checking duplicate-finder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/output/csv.rs:9:35
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                   ^^^^^ help: use `dyn`: `dyn Write`
[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/output/json.rs:9:35
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output/mod.rs:23:35
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> ();
[INFO] [stderr]    |                                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output/mod.rs:26:44
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn get_outputter(o: OutputType) -> Box<Outputter> {
[INFO] [stderr]    |                                            ^^^^^^^^^ help: use `dyn`: `dyn Outputter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/output/csv.rs:9:35
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                   ^^^^^ help: use `dyn`: `dyn Write`
[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/output/json.rs:9:35
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output/mod.rs:23:35
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> ();
[INFO] [stderr]    |                                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/output/mod.rs:26:44
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn get_outputter(o: OutputType) -> Box<Outputter> {
[INFO] [stderr]    |                                            ^^^^^^^^^ help: use `dyn`: `dyn Outputter`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outputter`
[INFO] [stderr]   --> src/main.rs:92:13
[INFO] [stderr]    |
[INFO] [stderr] 92 |         let outputter = get_outputter(opts.output_type);
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_outputter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]  --> src/output/csv.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                      ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]  --> src/output/csv.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                          ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]  --> src/output/json.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                      ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]  --> src/output/json.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                          ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `outputter`
[INFO] [stderr]   --> src/main.rs:92:13
[INFO] [stderr]    |
[INFO] [stderr] 92 |         let outputter = get_outputter(opts.output_type);
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_outputter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]  --> src/output/csv.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                      ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]  --> src/output/csv.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                          ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]  --> src/output/json.rs:9:22
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                      ^^^^^^ help: consider prefixing with an underscore: `_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `d`
[INFO] [stderr]  --> src/output/json.rs:9:42
[INFO] [stderr]   |
[INFO] [stderr] 9 |     fn output(&self, stream: &mut Write, d : &Duplicates) -> () {
[INFO] [stderr]   |                                          ^ help: consider prefixing with an underscore: `_d`
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `attr_literals` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(attr_literals, rustc_private)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `attr_literals` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(attr_literals, rustc_private)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.52s
[INFO] running `"docker" "inspect" "ddcb3162ea834a70f4fa5cb1476aebb4ec388665675353ec616f8423bde11f03"`
[INFO] running `"docker" "rm" "-f" "ddcb3162ea834a70f4fa5cb1476aebb4ec388665675353ec616f8423bde11f03"`
[INFO] [stdout] ddcb3162ea834a70f4fa5cb1476aebb4ec388665675353ec616f8423bde11f03