[INFO] cloning repository https://github.com/taoli-ax/rust-demo-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/taoli-ax/rust-demo-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaoli-ax%2Frust-demo-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaoli-ax%2Frust-demo-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a97252d4f3ce2c429448f9c5356a8f75af3e8130
[INFO] checking taoli-ax/rust-demo-study against try#fc545c6b951a304df08b327c158f92678582f435 for pr-140557-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftaoli-ax%2Frust-demo-study" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/taoli-ax/rust-demo-study on toolchain fc545c6b951a304df08b327c158f92678582f435
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fc545c6b951a304df08b327c158f92678582f435" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/taoli-ax/rust-demo-study
[INFO] finished tweaking git repo https://github.com/taoli-ax/rust-demo-study
[INFO] tweaked toml for git repo https://github.com/taoli-ax/rust-demo-study written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/taoli-ax/rust-demo-study already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fc545c6b951a304df08b327c158f92678582f435" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+fc545c6b951a304df08b327c158f92678582f435" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2196082cbf2f7f28e57501ead57409110fcae39ddfd827194eab4552857d3de9
[INFO] running `Command { std: "docker" "start" "-a" "2196082cbf2f7f28e57501ead57409110fcae39ddfd827194eab4552857d3de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2196082cbf2f7f28e57501ead57409110fcae39ddfd827194eab4552857d3de9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2196082cbf2f7f28e57501ead57409110fcae39ddfd827194eab4552857d3de9", kill_on_drop: false }`
[INFO] [stdout] 2196082cbf2f7f28e57501ead57409110fcae39ddfd827194eab4552857d3de9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+fc545c6b951a304df08b327c158f92678582f435" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8335a1d8df9aa1e0f53bec966899cb45e688709782944dfa0bf2b02ffb9029e0
[INFO] running `Command { std: "docker" "start" "-a" "8335a1d8df9aa1e0f53bec966899cb45e688709782944dfa0bf2b02ffb9029e0", kill_on_drop: false }`
[INFO] [stderr]     Checking hello-world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `Matrix` is more private than the item `transpose`
[INFO] [stdout]   --> src/primitives/tuple_2_2.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub fn transpose(matrix:Matrix) -> Matrix{
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `transpose` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Matrix` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/primitives/tuple_2_2.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Matrix` is more private than the item `transpose`
[INFO] [stdout]   --> src/primitives/tuple_2_2.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub fn transpose(matrix:Matrix) -> Matrix{
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `transpose` is reachable at visibility `pub(crate)`
[INFO] [stdout]    |
[INFO] [stdout] note: but type `Matrix` is only usable at visibility `pub(self)`
[INFO] [stdout]   --> src/primitives/tuple_2_2.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    | ^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "8335a1d8df9aa1e0f53bec966899cb45e688709782944dfa0bf2b02ffb9029e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8335a1d8df9aa1e0f53bec966899cb45e688709782944dfa0bf2b02ffb9029e0", kill_on_drop: false }`
[INFO] [stdout] 8335a1d8df9aa1e0f53bec966899cb45e688709782944dfa0bf2b02ffb9029e0