[INFO] fetching crate srand 0.4.0...
[INFO] testing srand-0.4.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate srand 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate srand 0.4.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb1616b1e1ad15f408166d36b7dbada06d15ef24d3f568032b197b8cce81d325
[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" "fb1616b1e1ad15f408166d36b7dbada06d15ef24d3f568032b197b8cce81d325", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb1616b1e1ad15f408166d36b7dbada06d15ef24d3f568032b197b8cce81d325", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb1616b1e1ad15f408166d36b7dbada06d15ef24d3f568032b197b8cce81d325", kill_on_drop: false }`
[INFO] [stdout] fb1616b1e1ad15f408166d36b7dbada06d15ef24d3f568032b197b8cce81d325
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] 4672173f9b0425a446c9d14b50dd33e4c12918549c01b5794946365e6d5f5ac4
[INFO] running `Command { std: "docker" "start" "-a" "4672173f9b0425a446c9d14b50dd33e4c12918549c01b5794946365e6d5f5ac4", 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 1.10s
[INFO] running `Command { std: "docker" "inspect" "4672173f9b0425a446c9d14b50dd33e4c12918549c01b5794946365e6d5f5ac4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4672173f9b0425a446c9d14b50dd33e4c12918549c01b5794946365e6d5f5ac4", kill_on_drop: false }`
[INFO] [stdout] 4672173f9b0425a446c9d14b50dd33e4c12918549c01b5794946365e6d5f5ac4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2beea1e42a506c51ee092d04c81cc8e4e0e5025273db47bcfd57f191b0734435
[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" "2beea1e42a506c51ee092d04c81cc8e4e0e5025273db47bcfd57f191b0734435", 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 1.42s
[INFO] running `Command { std: "docker" "inspect" "2beea1e42a506c51ee092d04c81cc8e4e0e5025273db47bcfd57f191b0734435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2beea1e42a506c51ee092d04c81cc8e4e0e5025273db47bcfd57f191b0734435", kill_on_drop: false }`
[INFO] [stdout] 2beea1e42a506c51ee092d04c81cc8e4e0e5025273db47bcfd57f191b0734435
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1252cc2016c48f68d566a6afff17073d255c66be68d153e5ee33da98de268cbd
[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" "1252cc2016c48f68d566a6afff17073d255c66be68d153e5ee33da98de268cbd", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/srand-97b4b824740bae6b
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test reader::test::random_read_examples ... ok
[INFO] [stdout] test source::test::print_const ... ok
[INFO] [stdout] test source::test::test_ops ... ok
[INFO] [stderr]    Doc-tests srand
[INFO] [stdout] test thread_local::test::example_thread_local ... ok
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::int64n (line 154) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::uint32 (line 107) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::int64 (line 56) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::float32 (line 184) ... ok
[INFO] [stdout] test src/source.rs - source::RngSource::new (line 655) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::shuffle (line 228) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::new (line 33) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::int32 (line 90) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::int32n (line 125) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::float64 (line 206) ... ok
[INFO] [stdout] test src/rand.rs - rand::Rand<S>::uint64 (line 73) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1252cc2016c48f68d566a6afff17073d255c66be68d153e5ee33da98de268cbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1252cc2016c48f68d566a6afff17073d255c66be68d153e5ee33da98de268cbd", kill_on_drop: false }`
[INFO] [stdout] 1252cc2016c48f68d566a6afff17073d255c66be68d153e5ee33da98de268cbd