[INFO] fetching crate rtss 0.6.0...
[INFO] checking rtss-0.6.0 against beta for pr-78714
[INFO] extracting crate rtss 0.6.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rtss 0.6.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtss 0.6.0
[INFO] finished tweaking crates.io crate rtss 0.6.0
[INFO] tweaked toml for crates.io crate rtss 0.6.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75284fb7fcf6b8f1480675aca1245c50edc9f6d80ba39559285fe18fbe6e6414
[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" "75284fb7fcf6b8f1480675aca1245c50edc9f6d80ba39559285fe18fbe6e6414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75284fb7fcf6b8f1480675aca1245c50edc9f6d80ba39559285fe18fbe6e6414", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75284fb7fcf6b8f1480675aca1245c50edc9f6d80ba39559285fe18fbe6e6414", kill_on_drop: false }`
[INFO] [stdout] 75284fb7fcf6b8f1480675aca1245c50edc9f6d80ba39559285fe18fbe6e6414
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7571ba18e768ed7f468f502c3b1b763b94de24001e49af4340be37e6ebcc7a4b
[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" "7571ba18e768ed7f468f502c3b1b763b94de24001e49af4340be37e6ebcc7a4b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rtss v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::os::unix::process::CommandExt::before_exec`: should be unsafe, use `pre_exec` instead
[INFO] [stdout]   --> src/main.rs:54:11
[INFO] [stdout]    |
[INFO] [stdout] 54 |     child.before_exec(move || {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::os::unix::process::CommandExt::before_exec`: should be unsafe, use `pre_exec` instead
[INFO] [stdout]   --> src/main.rs:54:11
[INFO] [stdout]    |
[INFO] [stdout] 54 |     child.before_exec(move || {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:130:44
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let out = if let Some((mut master, mut slave)) = tty {
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:130:44
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let out = if let Some((mut master, mut slave)) = tty {
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "7571ba18e768ed7f468f502c3b1b763b94de24001e49af4340be37e6ebcc7a4b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7571ba18e768ed7f468f502c3b1b763b94de24001e49af4340be37e6ebcc7a4b", kill_on_drop: false }`
[INFO] [stdout] 7571ba18e768ed7f468f502c3b1b763b94de24001e49af4340be37e6ebcc7a4b