[INFO] fetching crate srand 0.4.0...
[INFO] testing srand-0.4.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate srand 0.4.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate srand 0.4.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1eeb7dfc9a45dd36496d6ae1afe2f5f7e9ce2687027d480ce9451388300a725b
[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" "1eeb7dfc9a45dd36496d6ae1afe2f5f7e9ce2687027d480ce9451388300a725b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1eeb7dfc9a45dd36496d6ae1afe2f5f7e9ce2687027d480ce9451388300a725b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eeb7dfc9a45dd36496d6ae1afe2f5f7e9ce2687027d480ce9451388300a725b", kill_on_drop: false }`
[INFO] [stdout] 1eeb7dfc9a45dd36496d6ae1afe2f5f7e9ce2687027d480ce9451388300a725b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6776abd622e70725029bae09731ec97c2ee0842654632a316788f727eb8675fc
[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" "6776abd622e70725029bae09731ec97c2ee0842654632a316788f727eb8675fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling srand v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 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: `#[warn(arithmetic_overflow)]` 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 1.54s
[INFO] running `Command { std: "docker" "inspect" "6776abd622e70725029bae09731ec97c2ee0842654632a316788f727eb8675fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6776abd622e70725029bae09731ec97c2ee0842654632a316788f727eb8675fc", kill_on_drop: false }`
[INFO] [stdout] 6776abd622e70725029bae09731ec97c2ee0842654632a316788f727eb8675fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e0cf6ef238279ab8b5d5e989796b3bdd45956bec6702cbe722457dd9a8754ac1
[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" "e0cf6ef238279ab8b5d5e989796b3bdd45956bec6702cbe722457dd9a8754ac1", kill_on_drop: false }`
[INFO] [stderr]    Compiling srand v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 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: `#[warn(arithmetic_overflow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.39s
[INFO] running `Command { std: "docker" "inspect" "e0cf6ef238279ab8b5d5e989796b3bdd45956bec6702cbe722457dd9a8754ac1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0cf6ef238279ab8b5d5e989796b3bdd45956bec6702cbe722457dd9a8754ac1", kill_on_drop: false }`
[INFO] [stdout] e0cf6ef238279ab8b5d5e989796b3bdd45956bec6702cbe722457dd9a8754ac1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", 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] b02c63af4f593945b5bc0ba75a9de9c5d96774c6e85bd1433322503ca12da582
[INFO] running `Command { std: "docker" "start" "-a" "b02c63af4f593945b5bc0ba75a9de9c5d96774c6e85bd1433322503ca12da582", kill_on_drop: false }`
[INFO] [stderr] warning: this arithmetic operation will overflow
[INFO] [stderr]    --> src/rand.rs:217:48
[INFO] [stderr]     |
[INFO] [stderr] 217 |             let f: f64 = self.int64() as f64 / (1 << 63) as f64;
[INFO] [stderr]     |                                                ^^^^^^^^^ attempt to shift left by `63_i32`, which would overflow
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(arithmetic_overflow)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `srand` (lib) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/srand-8b95299ec455f365)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test reader::test::random_read_examples ... ok
[INFO] [stdout] test source::test::test_ops ... ok
[INFO] [stdout] test source::test::print_const ... ok
[INFO] [stdout] test thread_local::test::example_thread_local ... ok
[INFO] [stderr]    Doc-tests srand
[INFO] [stdout] test rand::test::examples ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::float32 (line 184) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::int32 (line 90) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::uint32 (line 107) - compile ... ok
[INFO] [stdout] test src/source.rs - source::RngSource::new (line 655) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::int64n (line 154) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::int32n (line 125) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::int64 (line 56) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::float64 (line 206) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::uint64 (line 73) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::new (line 33) - compile ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::shuffle (line 228) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.52s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b02c63af4f593945b5bc0ba75a9de9c5d96774c6e85bd1433322503ca12da582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b02c63af4f593945b5bc0ba75a9de9c5d96774c6e85bd1433322503ca12da582", kill_on_drop: false }`
[INFO] [stdout] b02c63af4f593945b5bc0ba75a9de9c5d96774c6e85bd1433322503ca12da582