[INFO] fetching crate srand 0.4.0...
[INFO] testing srand-0.4.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate srand 0.4.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate srand 0.4.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate srand 0.4.0
[INFO] finished tweaking crates.io crate srand 0.4.0
[INFO] tweaked toml for crates.io crate srand 0.4.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f6899d705f4a0ac9290d4d245036931cd3ea7514786980aaae78be89a9bc6e5
[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" "4f6899d705f4a0ac9290d4d245036931cd3ea7514786980aaae78be89a9bc6e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f6899d705f4a0ac9290d4d245036931cd3ea7514786980aaae78be89a9bc6e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f6899d705f4a0ac9290d4d245036931cd3ea7514786980aaae78be89a9bc6e5", kill_on_drop: false }`
[INFO] [stdout] 4f6899d705f4a0ac9290d4d245036931cd3ea7514786980aaae78be89a9bc6e5
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fac7d0ff554ba1e63d3a1cc30fd7ae90a8581bfacafa1a308b4c5445bd72f1d3
[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" "fac7d0ff554ba1e63d3a1cc30fd7ae90a8581bfacafa1a308b4c5445bd72f1d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling srand v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this arithmetic operation will overflow
[INFO] [stdout]    --> src/rand.rs:217:48
[INFO] [stdout]     |
[INFO] [stdout] 217 |             let f: f64 = self.int64() as f64 / (1 << 63) as f64;
[INFO] [stdout]     |                                                ^^^^^^^^^ attempt to shift left by `63_i32`, which would overflow
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(arithmetic_overflow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `srand`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "fac7d0ff554ba1e63d3a1cc30fd7ae90a8581bfacafa1a308b4c5445bd72f1d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fac7d0ff554ba1e63d3a1cc30fd7ae90a8581bfacafa1a308b4c5445bd72f1d3", kill_on_drop: false }`
[INFO] [stdout] fac7d0ff554ba1e63d3a1cc30fd7ae90a8581bfacafa1a308b4c5445bd72f1d3