[INFO] cloning repository https://github.com/xsoer/rust-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xsoer/rust-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxsoer%2Frust-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxsoer%2Frust-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 247359952b77c6a81551bbb2fdd35cce93ac841e
[INFO] checking xsoer/rust-examples against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxsoer%2Frust-examples" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xsoer/rust-examples on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xsoer/rust-examples
[INFO] finished tweaking git repo https://github.com/xsoer/rust-examples
[INFO] tweaked toml for git repo https://github.com/xsoer/rust-examples written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/xsoer/rust-examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99da312f9bf8354752d67345fe81f8007bf182e24f86842cbafd7fefbdf72f34
[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" "99da312f9bf8354752d67345fe81f8007bf182e24f86842cbafd7fefbdf72f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99da312f9bf8354752d67345fe81f8007bf182e24f86842cbafd7fefbdf72f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99da312f9bf8354752d67345fe81f8007bf182e24f86842cbafd7fefbdf72f34", kill_on_drop: false }`
[INFO] [stdout] 99da312f9bf8354752d67345fe81f8007bf182e24f86842cbafd7fefbdf72f34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 3c6db41809587c39c0620ce8c6918f613823182dcf8007121b43b06312c44172
[INFO] running `Command { std: "docker" "start" "-a" "3c6db41809587c39c0620ce8c6918f613823182dcf8007121b43b06312c44172", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rust-examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/thread/thread1.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     for i in 0..10 {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/thread/thread1.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn th4(i: u8) {
[INFO] [stdout]    |        ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `th1`
[INFO] [stdout]  --> src/thread/thread1.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn th1() -> bool {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `th2`
[INFO] [stdout]   --> src/thread/thread1.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn th2(i: u8) -> u8 {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `th3`
[INFO] [stdout]   --> src/thread/thread1.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn th3(i: u8) -> bool {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `th4`
[INFO] [stdout]   --> src/thread/thread1.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn th4(i: u8) {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `th5`
[INFO] [stdout]   --> src/thread/thread1.rs:28:4
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn th5() -> bool {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `lcs`
[INFO] [stdout]  --> src/algorithm/lcs.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn lcs(l: String, r: String) -> usize {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0061]: this function takes 1 argument but 0 arguments were supplied
[INFO] [stdout]   --> src/thread/thread1.rs:65:20
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn th4(i: u8) {
[INFO] [stdout]    | ------------- defined here
[INFO] [stdout] ...
[INFO] [stdout] 65 |         assert_eq!(th4(), true);
[INFO] [stdout]    |                    ^^^-- supplied 0 arguments
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    expected 1 argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_lcs`
[INFO] [stdout]   --> src/algorithm/lcs.rs:16:4
[INFO] [stdout]    |
[INFO] [stdout] 16 | fn test_lcs() -> usize {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/thread/thread1.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     handle.join();
[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: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/thread/thread1.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         assert_eq!(th4(), true);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ expected `()`, found `bool`
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0061, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0061`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-examples`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "3c6db41809587c39c0620ce8c6918f613823182dcf8007121b43b06312c44172", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c6db41809587c39c0620ce8c6918f613823182dcf8007121b43b06312c44172", kill_on_drop: false }`
[INFO] [stdout] 3c6db41809587c39c0620ce8c6918f613823182dcf8007121b43b06312c44172