[INFO] fetching crate ark-std 0.3.0...
[INFO] testing ark-std-0.3.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate ark-std 0.3.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ark-std 0.3.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ark-std 0.3.0
[INFO] finished tweaking crates.io crate ark-std 0.3.0
[INFO] tweaked toml for crates.io crate ark-std 0.3.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc958cd0924a95b8c0ee3dd3729f0349f68f86755f8cc4324f4e0ea8cdf6ec94
[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" "cc958cd0924a95b8c0ee3dd3729f0349f68f86755f8cc4324f4e0ea8cdf6ec94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc958cd0924a95b8c0ee3dd3729f0349f68f86755f8cc4324f4e0ea8cdf6ec94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc958cd0924a95b8c0ee3dd3729f0349f68f86755f8cc4324f4e0ea8cdf6ec94", kill_on_drop: false }`
[INFO] [stdout] cc958cd0924a95b8c0ee3dd3729f0349f68f86755f8cc4324f4e0ea8cdf6ec94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b28b16f7765f51826c1c654ff03a2855ad64e34b24810f12315c567e04eafa3
[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" "8b28b16f7765f51826c1c654ff03a2855ad64e34b24810f12315c567e04eafa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling ark-std v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.46s
[INFO] running `Command { std: "docker" "inspect" "8b28b16f7765f51826c1c654ff03a2855ad64e34b24810f12315c567e04eafa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b28b16f7765f51826c1c654ff03a2855ad64e34b24810f12315c567e04eafa3", kill_on_drop: false }`
[INFO] [stdout] 8b28b16f7765f51826c1c654ff03a2855ad64e34b24810f12315c567e04eafa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae84bfe8db9be482d62ebf2d78519b78bf28bd7410a56a7582a87bd0d053d10e
[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" "ae84bfe8db9be482d62ebf2d78519b78bf28bd7410a56a7582a87bd0d053d10e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling ark-std v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 20.68s
[INFO] running `Command { std: "docker" "inspect" "ae84bfe8db9be482d62ebf2d78519b78bf28bd7410a56a7582a87bd0d053d10e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae84bfe8db9be482d62ebf2d78519b78bf28bd7410a56a7582a87bd0d053d10e", kill_on_drop: false }`
[INFO] [stdout] ae84bfe8db9be482d62ebf2d78519b78bf28bd7410a56a7582a87bd0d053d10e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7a286307e3e3ae8a2f40766f534bf351d8604f1cbdfff09d665c25b7ed8937a8
[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" "7a286307e3e3ae8a2f40766f534bf351d8604f1cbdfff09d665c25b7ed8937a8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [optimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ark_std-185c1dbec4b5d236)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ark-std
[INFO] [stdout] running 3 tests
[INFO] [stdout] test perf_trace::tests::print_add ... ok
[INFO] [stdout] test test::test_cfg_macros ... ok
[INFO] [stdout] test perf_trace::tests::print_start_end ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - log2 (line 56) ... ok
[INFO] [stdout] test src/perf_trace.rs - perf_trace (line 18) ... ok
[INFO] [stdout] test src/perf_trace.rs - perf_trace (line 4) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.84s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7a286307e3e3ae8a2f40766f534bf351d8604f1cbdfff09d665c25b7ed8937a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a286307e3e3ae8a2f40766f534bf351d8604f1cbdfff09d665c25b7ed8937a8", kill_on_drop: false }`
[INFO] [stdout] 7a286307e3e3ae8a2f40766f534bf351d8604f1cbdfff09d665c25b7ed8937a8