[INFO] fetching crate rand 0.8.4...
[INFO] checking rand-0.8.4 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate rand 0.8.4 into /workspace/builds/worker-23/source
[INFO] validating manifest of crates.io crate rand 0.8.4 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rand 0.8.4
[INFO] finished tweaking crates.io crate rand 0.8.4
[INFO] tweaked toml for crates.io crate rand 0.8.4 written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate crates.io crate rand 0.8.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bincode v1.3.2
[INFO] [stderr]   Downloaded packed_simd_2 v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae162d53ef0e8bb43b3693011c5b2f1b13caf7ba2a28b76966df36ec9146273e
[INFO] running `Command { std: "docker" "start" "-a" "ae162d53ef0e8bb43b3693011c5b2f1b13caf7ba2a28b76966df36ec9146273e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae162d53ef0e8bb43b3693011c5b2f1b13caf7ba2a28b76966df36ec9146273e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae162d53ef0e8bb43b3693011c5b2f1b13caf7ba2a28b76966df36ec9146273e", kill_on_drop: false }`
[INFO] [stdout] ae162d53ef0e8bb43b3693011c5b2f1b13caf7ba2a28b76966df36ec9146273e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 436c663fa52f8747591ab931ed650e2473d13cc3a15e3af045cca6c62cf14116
[INFO] running `Command { std: "docker" "start" "-a" "436c663fa52f8747591ab931ed650e2473d13cc3a15e3af045cca6c62cf14116", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking rand_hc v0.3.1
[INFO] [stderr]     Checking rand v0.8.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bincode v1.3.2
[INFO] [stdout] warning: unused return value of `from` that must be used
[INFO] [stdout]     --> src/distributions/uniform.rs:1433:9
[INFO] [stdout]      |
[INFO] [stdout] 1433 |         Uniform::from(::core::f64::MIN..::core::f64::MAX);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_must_use)]` 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 7.44s
[INFO] running `Command { std: "docker" "inspect" "436c663fa52f8747591ab931ed650e2473d13cc3a15e3af045cca6c62cf14116", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "436c663fa52f8747591ab931ed650e2473d13cc3a15e3af045cca6c62cf14116", kill_on_drop: false }`
[INFO] [stdout] 436c663fa52f8747591ab931ed650e2473d13cc3a15e3af045cca6c62cf14116