[INFO] cloning repository https://github.com/AtomicMegaNerd/learning_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AtomicMegaNerd/learning_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtomicMegaNerd%2Flearning_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtomicMegaNerd%2Flearning_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d273a33409bbaf55a0995a94fe86968009715868
[INFO] checking AtomicMegaNerd/learning_rust against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAtomicMegaNerd%2Flearning_rust" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AtomicMegaNerd/learning_rust on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AtomicMegaNerd/learning_rust
[INFO] finished tweaking git repo https://github.com/AtomicMegaNerd/learning_rust
[INFO] tweaked toml for git repo https://github.com/AtomicMegaNerd/learning_rust written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/AtomicMegaNerd/learning_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", 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] baf2590eb7ad77301e3cb5c9e4dceedd691807579a300c6cc2aac8fe259bcbb4
[INFO] running `Command { std: "docker" "start" "-a" "baf2590eb7ad77301e3cb5c9e4dceedd691807579a300c6cc2aac8fe259bcbb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baf2590eb7ad77301e3cb5c9e4dceedd691807579a300c6cc2aac8fe259bcbb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baf2590eb7ad77301e3cb5c9e4dceedd691807579a300c6cc2aac8fe259bcbb4", kill_on_drop: false }`
[INFO] [stdout] baf2590eb7ad77301e3cb5c9e4dceedd691807579a300c6cc2aac8fe259bcbb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "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] 4c86bc2b7812a5c4add072933889a1a8bbdcb6d7d6f37b418112b30c97cf3e36
[INFO] running `Command { std: "docker" "start" "-a" "4c86bc2b7812a5c4add072933889a1a8bbdcb6d7d6f37b418112b30c97cf3e36", kill_on_drop: false }`
[INFO] [stderr]     Checking learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]  --> src/control_flows.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |         19...21 => "L",
[INFO] [stdout]   |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/control_flows.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         'inner_while: while c2 < 6 {
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/control_flows.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         'inner_loop: loop {
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/control_flows.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |         'inner_for: for c2 in 1..6 {
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]  --> src/control_flows.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 |         19...21 => "L",
[INFO] [stdout]   |           ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> src/control_flows.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         'inner_while: while c2 < 6 {
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/control_flows.rs:105:9
[INFO] [stdout]     |
[INFO] [stdout] 105 |         'inner_loop: loop {
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]    --> src/control_flows.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |         'inner_for: for c2 in 1..6 {
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "4c86bc2b7812a5c4add072933889a1a8bbdcb6d7d6f37b418112b30c97cf3e36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c86bc2b7812a5c4add072933889a1a8bbdcb6d7d6f37b418112b30c97cf3e36", kill_on_drop: false }`
[INFO] [stdout] 4c86bc2b7812a5c4add072933889a1a8bbdcb6d7d6f37b418112b30c97cf3e36