[INFO] crate samplers 0.1.3 is already in cache
[INFO] testing samplers-0.1.3 against beta-2020-07-24 for beta-1.46-1
[INFO] extracting crate samplers 0.1.3 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate samplers 0.1.3 on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate samplers 0.1.3
[INFO] finished tweaking crates.io crate samplers 0.1.3
[INFO] tweaked toml for crates.io crate samplers 0.1.3 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate samplers 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9bbc044871c0217be3177b7c2ed48d1c715bfe16cb041df4c53aa823207d338
[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" "f9bbc044871c0217be3177b7c2ed48d1c715bfe16cb041df4c53aa823207d338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9bbc044871c0217be3177b7c2ed48d1c715bfe16cb041df4c53aa823207d338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9bbc044871c0217be3177b7c2ed48d1c715bfe16cb041df4c53aa823207d338", kill_on_drop: false }`
[INFO] [stdout] f9bbc044871c0217be3177b7c2ed48d1c715bfe16cb041df4c53aa823207d338
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b8d9fdc15832aa306418aa30587a0ad05de1ddb1b75d3012ba8525de654f341
[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" "6b8d9fdc15832aa306418aa30587a0ad05de1ddb1b75d3012ba8525de654f341", kill_on_drop: false }`
[INFO] [stderr]    Compiling backtrace-sys v0.1.33
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.16
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling backtrace v0.3.45
[INFO] [stderr]    Compiling statrs v0.12.0
[INFO] [stderr]    Compiling rand_distr v0.2.2
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]    Compiling failure v0.1.7
[INFO] [stderr]    Compiling samplers v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.61s
[INFO] running `Command { std: "docker" "inspect" "6b8d9fdc15832aa306418aa30587a0ad05de1ddb1b75d3012ba8525de654f341", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b8d9fdc15832aa306418aa30587a0ad05de1ddb1b75d3012ba8525de654f341", kill_on_drop: false }`
[INFO] [stdout] 6b8d9fdc15832aa306418aa30587a0ad05de1ddb1b75d3012ba8525de654f341
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 58cbb52e391a65b0e483f964a9dad67434829874291f15b8b366d5387c2ab157
[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" "58cbb52e391a65b0e483f964a9dad67434829874291f15b8b366d5387c2ab157", kill_on_drop: false }`
[INFO] [stderr]    Compiling samplers v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `Command { std: "docker" "inspect" "58cbb52e391a65b0e483f964a9dad67434829874291f15b8b366d5387c2ab157", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58cbb52e391a65b0e483f964a9dad67434829874291f15b8b366d5387c2ab157", kill_on_drop: false }`
[INFO] [stdout] 58cbb52e391a65b0e483f964a9dad67434829874291f15b8b366d5387c2ab157
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d9bc52ae45a4d789caf068ab32c00541f82859ebcb6c90fe5cfd189159d7b81f
[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" "d9bc52ae45a4d789caf068ab32c00541f82859ebcb6c90fe5cfd189159d7b81f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/samplers-348686fb0ba7c0a0
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test summary::test_mean ... ok
[INFO] [stdout] test summary::test_central_moments_summary ... ok
[INFO] [stdout] test histogram::test_histogram ... ok
[INFO] [stdout] test summary::test_distribution_summary ... ok
[INFO] [stdout] test summary::test_variance ... ok
[INFO] [stdout] test histogram::test_linspace ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d9bc52ae45a4d789caf068ab32c00541f82859ebcb6c90fe5cfd189159d7b81f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9bc52ae45a4d789caf068ab32c00541f82859ebcb6c90fe5cfd189159d7b81f", kill_on_drop: false }`
[INFO] [stdout] d9bc52ae45a4d789caf068ab32c00541f82859ebcb6c90fe5cfd189159d7b81f