[INFO] fetching crate hello_closures 0.1.0...
[INFO] checking hello_closures-0.1.0 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] extracting crate hello_closures 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate hello_closures 0.1.0 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hello_closures 0.1.0
[INFO] finished tweaking crates.io crate hello_closures 0.1.0
[INFO] tweaked toml for crates.io crate hello_closures 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate hello_closures 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 486f0f70bed99a333548aae24fb3c1e15d0b4b0282a50050b95f2b117eba23b5
[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" "486f0f70bed99a333548aae24fb3c1e15d0b4b0282a50050b95f2b117eba23b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "486f0f70bed99a333548aae24fb3c1e15d0b4b0282a50050b95f2b117eba23b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "486f0f70bed99a333548aae24fb3c1e15d0b4b0282a50050b95f2b117eba23b5", kill_on_drop: false }`
[INFO] [stdout] 486f0f70bed99a333548aae24fb3c1e15d0b4b0282a50050b95f2b117eba23b5
[INFO] running `Command { std: "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" "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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b948fa95a521e2c0edba3dc660984a9932699648ac50d7db96bcfdd3d2a112eb
[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" "b948fa95a521e2c0edba3dc660984a9932699648ac50d7db96bcfdd3d2a112eb", kill_on_drop: false }`
[INFO] [stderr]     Checking hello_closures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/lib.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn simulated_expensive_calculation(num: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `shoes_in_my_size`
[INFO] [stdout]   --> src/lib.rs:85:4
[INFO] [stdout]    |
[INFO] [stdout] 85 | fn shoes_in_my_size(shoes: Vec<Shoe>, shoe_size: u32) -> Vec<Shoe> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn new() -> Counter {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `simulated_expensive_calculation`
[INFO] [stdout]  --> src/lib.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn simulated_expensive_calculation(num: u32) -> u32 {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `Command { std: "docker" "inspect" "b948fa95a521e2c0edba3dc660984a9932699648ac50d7db96bcfdd3d2a112eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b948fa95a521e2c0edba3dc660984a9932699648ac50d7db96bcfdd3d2a112eb", kill_on_drop: false }`
[INFO] [stdout] b948fa95a521e2c0edba3dc660984a9932699648ac50d7db96bcfdd3d2a112eb