[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] 62217a74971f27cc3c3d0d274c84149ca343852d
[INFO] checking xsoer/rust-examples against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxsoer%2Frust-examples" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xsoer/rust-examples on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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-9/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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06d9eb087bb6e8c7ab77c0c19fd20b7a6a9dbe042dd5c564deecc2618fad2bc6
[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" "06d9eb087bb6e8c7ab77c0c19fd20b7a6a9dbe042dd5c564deecc2618fad2bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06d9eb087bb6e8c7ab77c0c19fd20b7a6a9dbe042dd5c564deecc2618fad2bc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06d9eb087bb6e8c7ab77c0c19fd20b7a6a9dbe042dd5c564deecc2618fad2bc6", kill_on_drop: false }`
[INFO] [stdout] 06d9eb087bb6e8c7ab77c0c19fd20b7a6a9dbe042dd5c564deecc2618fad2bc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b65fd77021c8e68d34467f8fca32f3da13e25f31c9701884e4e7a3d40b858f20
[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" "b65fd77021c8e68d34467f8fca32f3da13e25f31c9701884e4e7a3d40b858f20", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rust-examples v0.1.0 (/opt/rustwide/workdir)
[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() -> 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] 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:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     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: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/thread/thread1.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.23s
[INFO] running `Command { std: "docker" "inspect" "b65fd77021c8e68d34467f8fca32f3da13e25f31c9701884e4e7a3d40b858f20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b65fd77021c8e68d34467f8fca32f3da13e25f31c9701884e4e7a3d40b858f20", kill_on_drop: false }`
[INFO] [stdout] b65fd77021c8e68d34467f8fca32f3da13e25f31c9701884e4e7a3d40b858f20