[INFO] cloning repository https://github.com/ehlxr/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ehlxr/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fehlxr%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fehlxr%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 182c439d7a33d21fabae3a1ab373aa3c09c8260a
[INFO] checking ehlxr/rust_study against try#353a0a223066e9f46a1d935f2271a26c3c5002bb for pr-75180
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fehlxr%2Frust_study" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ehlxr/rust_study on toolchain 353a0a223066e9f46a1d935f2271a26c3c5002bb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ehlxr/rust_study
[INFO] finished tweaking git repo https://github.com/ehlxr/rust_study
[INFO] tweaked toml for git repo https://github.com/ehlxr/rust_study written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ehlxr/rust_study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e21ab299b9f5970fd07e270ce6696799f9d5a6bc78fc5b39ff11a45d6442a532
[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" "e21ab299b9f5970fd07e270ce6696799f9d5a6bc78fc5b39ff11a45d6442a532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e21ab299b9f5970fd07e270ce6696799f9d5a6bc78fc5b39ff11a45d6442a532", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e21ab299b9f5970fd07e270ce6696799f9d5a6bc78fc5b39ff11a45d6442a532", kill_on_drop: false }`
[INFO] [stdout] e21ab299b9f5970fd07e270ce6696799f9d5a6bc78fc5b39ff11a45d6442a532
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91f6bfef613428958bc910a5fa65ce686e0143f4a9a34ee026ba5e957065415a
[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" "91f6bfef613428958bc910a5fa65ce686e0143f4a9a34ee026ba5e957065415a", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `fs`
[INFO] [stdout]  --> src/main.rs:7:47
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{collections::HashMap, fmt::Display, fs, fs::File, io, io::ErrorKind, thread};
[INFO] [stdout]   |                                               ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:633:10
[INFO] [stdout]     |
[INFO] [stdout] 633 |         1...5 => println!("one through five"),
[INFO] [stdout]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:639:12
[INFO] [stdout]     |
[INFO] [stdout] 639 |         'a'...'j' => println!("early ASCII letter"),
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:640:12
[INFO] [stdout]     |
[INFO] [stdout] 640 |         'k'...'z' => println!("late ASCII letter"),
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:772:35
[INFO] [stdout]     |
[INFO] [stdout] 772 |         Ms::Hello { id: id_var @ 3...7 } => println!("Found an id in range: {}", id_var),
[INFO] [stdout]     |                                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:774:27
[INFO] [stdout]     |
[INFO] [stdout] 774 |         Ms::Hello { id: 10...12 } => println!("Found an id in another range"),
[INFO] [stdout]     |                           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fs`
[INFO] [stdout]  --> src/main.rs:7:47
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::{collections::HashMap, fmt::Display, fs, fs::File, io, io::ErrorKind, thread};
[INFO] [stdout]   |                                               ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:633:10
[INFO] [stdout]     |
[INFO] [stdout] 633 |         1...5 => println!("one through five"),
[INFO] [stdout]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:639:12
[INFO] [stdout]     |
[INFO] [stdout] 639 |         'a'...'j' => println!("early ASCII letter"),
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:640:12
[INFO] [stdout]     |
[INFO] [stdout] 640 |         'k'...'z' => println!("late ASCII letter"),
[INFO] [stdout]     |            ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:772:35
[INFO] [stdout]     |
[INFO] [stdout] 772 |         Ms::Hello { id: id_var @ 3...7 } => println!("Found an id in range: {}", id_var),
[INFO] [stdout]     |                                   ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:774:27
[INFO] [stdout]     |
[INFO] [stdout] 774 |         Ms::Hello { id: 10...12 } => println!("Found an id in another range"),
[INFO] [stdout]     |                           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]    --> src/main.rs:877:9
[INFO] [stdout]     |
[INFO] [stdout] 877 |     let obj = Box::new(Ball { diameter: &num }) as Box<dyn Red>;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]    --> src/main.rs:918:9
[INFO] [stdout]     |
[INFO] [stdout] 918 |     let rc = returns_closure();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]    --> src/main.rs:877:9
[INFO] [stdout]     |
[INFO] [stdout] 877 |     let obj = Box::new(Ball { diameter: &num }) as Box<dyn Red>;
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rc`
[INFO] [stdout]    --> src/main.rs:918:9
[INFO] [stdout]     |
[INFO] [stdout] 918 |     let rc = returns_closure();
[INFO] [stdout]     |         ^^ help: if this is intentional, prefix it with an underscore: `_rc`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v1`
[INFO] [stdout]     --> src/main.rs:1644:13
[INFO] [stdout]      |
[INFO] [stdout] 1644 |         let v1 = c.value(2);
[INFO] [stdout]      |             ^^ help: if this is intentional, prefix it with an underscore: `_v1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]     --> src/main.rs:1659:13
[INFO] [stdout]      |
[INFO] [stdout] 1659 |         let v = c.value("tetsss");
[INFO] [stdout]      |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `diameter`
[INFO] [stdout]    --> src/main.rs:871:9
[INFO] [stdout]     |
[INFO] [stdout] 871 |         diameter: &'a i32,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `StrWrap`
[INFO] [stdout]    --> src/main.rs:881:12
[INFO] [stdout]     |
[INFO] [stdout] 881 |     struct StrWrap<'a>(&'a str);
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fsw`
[INFO] [stdout]    --> src/main.rs:884:8
[INFO] [stdout]     |
[INFO] [stdout] 884 |     fn fsw(string: &str) -> StrWrap<'_> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Stop`
[INFO] [stdout]    --> src/main.rs:909:9
[INFO] [stdout]     |
[INFO] [stdout] 909 |         Stop,
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.10s
[INFO] running `Command { std: "docker" "inspect" "91f6bfef613428958bc910a5fa65ce686e0143f4a9a34ee026ba5e957065415a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f6bfef613428958bc910a5fa65ce686e0143f4a9a34ee026ba5e957065415a", kill_on_drop: false }`
[INFO] [stdout] 91f6bfef613428958bc910a5fa65ce686e0143f4a9a34ee026ba5e957065415a