[INFO] fetching crate librualg 0.7.0...
[INFO] checking librualg-0.7.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate librualg 0.7.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate librualg 0.7.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate librualg 0.7.0
[INFO] finished tweaking crates.io crate librualg 0.7.0
[INFO] tweaked toml for crates.io crate librualg 0.7.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb6d9fc50d306cbcbc499e371b26ee50445f7a1638e19ed1cc53c130e8bcc3fc
[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" "cb6d9fc50d306cbcbc499e371b26ee50445f7a1638e19ed1cc53c130e8bcc3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb6d9fc50d306cbcbc499e371b26ee50445f7a1638e19ed1cc53c130e8bcc3fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb6d9fc50d306cbcbc499e371b26ee50445f7a1638e19ed1cc53c130e8bcc3fc", kill_on_drop: false }`
[INFO] [stdout] cb6d9fc50d306cbcbc499e371b26ee50445f7a1638e19ed1cc53c130e8bcc3fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] 77278d4ad481a5b0035f0d5816613bbe239b76ea8041084fbe01343093efc355
[INFO] running `Command { std: "docker" "start" "-a" "77278d4ad481a5b0035f0d5816613bbe239b76ea8041084fbe01343093efc355", kill_on_drop: false }`
[INFO] [stderr]     Checking librualg v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `time_in`
[INFO] [stdout]   --> src/graph/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     time_in: Option<u32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `time_out`
[INFO] [stdout]   --> src/graph/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     time_out: Option<u32>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/segment_tree/mod.rs:330:9
[INFO] [stdout]     |
[INFO] [stdout] 330 |     let mut tree = RSQ::<i32>::new(&vec![]);
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `time_in`
[INFO] [stdout]   --> src/graph/mod.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     time_in: Option<u32>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `time_out`
[INFO] [stdout]   --> src/graph/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     time_out: Option<u32>
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "77278d4ad481a5b0035f0d5816613bbe239b76ea8041084fbe01343093efc355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77278d4ad481a5b0035f0d5816613bbe239b76ea8041084fbe01343093efc355", kill_on_drop: false }`
[INFO] [stdout] 77278d4ad481a5b0035f0d5816613bbe239b76ea8041084fbe01343093efc355