[INFO] fetching crate c2_histograms 0.2.4...
[INFO] testing c2_histograms-0.2.4 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate c2_histograms 0.2.4 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate c2_histograms 0.2.4 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 c2_histograms 0.2.4
[INFO] finished tweaking crates.io crate c2_histograms 0.2.4
[INFO] tweaked toml for crates.io crate c2_histograms 0.2.4 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4f14d7aadcd6ea9a7ac041e3d78a7397e4675ebefb5cd1b481065272914eb183
[INFO] running `Command { std: "docker" "start" "-a" "4f14d7aadcd6ea9a7ac041e3d78a7397e4675ebefb5cd1b481065272914eb183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f14d7aadcd6ea9a7ac041e3d78a7397e4675ebefb5cd1b481065272914eb183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f14d7aadcd6ea9a7ac041e3d78a7397e4675ebefb5cd1b481065272914eb183", kill_on_drop: false }`
[INFO] [stdout] 4f14d7aadcd6ea9a7ac041e3d78a7397e4675ebefb5cd1b481065272914eb183
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3a714dc89e5108ce3393152bd4fa82de51ed1bc3c5c412067b6c1425be7c8be0
[INFO] running `Command { std: "docker" "start" "-a" "3a714dc89e5108ce3393152bd4fa82de51ed1bc3c5c412067b6c1425be7c8be0", kill_on_drop: false }`
[INFO] [stderr]    Compiling c2_histograms v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "3a714dc89e5108ce3393152bd4fa82de51ed1bc3c5c412067b6c1425be7c8be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a714dc89e5108ce3393152bd4fa82de51ed1bc3c5c412067b6c1425be7c8be0", kill_on_drop: false }`
[INFO] [stdout] 3a714dc89e5108ce3393152bd4fa82de51ed1bc3c5c412067b6c1425be7c8be0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42da503a588df3790cfa94ad0d3da2dad097be5b7cac13e658329a7fb716c2e2
[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" "42da503a588df3790cfa94ad0d3da2dad097be5b7cac13e658329a7fb716c2e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling c2_histograms v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "42da503a588df3790cfa94ad0d3da2dad097be5b7cac13e658329a7fb716c2e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42da503a588df3790cfa94ad0d3da2dad097be5b7cac13e658329a7fb716c2e2", kill_on_drop: false }`
[INFO] [stdout] 42da503a588df3790cfa94ad0d3da2dad097be5b7cac13e658329a7fb716c2e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 10cc557aa6e7048b350bdb96423c68df1e85dd3a74c2f31880f90dbab4f06efb
[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" "10cc557aa6e7048b350bdb96423c68df1e85dd3a74c2f31880f90dbab4f06efb", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] running 15 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/c2_histograms-3ef59b27328ab075)
[INFO] [stdout] test c2::compact_testing::ranges ... ok
[INFO] [stdout] test c2::compact_testing::sub_ranges ... ok
[INFO] [stderr]    Doc-tests c2_histograms
[INFO] [stdout] test c2::compact_testing::init_params ... ok
[INFO] [stdout] test c2::compress_testing::compression ... ok
[INFO] [stdout] test c2::compact_testing::pos_leases ... ok
[INFO] [stdout] test c2::compress_testing::init_params ... ok
[INFO] [stdout] test standard::standard_testing::c2_1 ... ok
[INFO] [stdout] test c2::compact_testing::index_buckets ... ok
[INFO] [stdout] test c2::compress_testing::decompression ... ok
[INFO] [stdout] test c2::compress_testing::decomp_comp ... ok
[INFO] [stdout] test standard::standard_testing::compression1 ... ok
[INFO] [stdout] test standard::standard_testing::init ... ok
[INFO] [stdout] test standard::standard_testing::compaction1 ... ok
[INFO] [stdout] test standard::standard_testing::compression2 ... ok
[INFO] [stdout] test standard::standard_testing::compaction2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/standard.rs - standard::NullParams (line 153) ... ok
[INFO] [stdout] test src/c2.rs - c2::CompactParams (line 123) ... ok
[INFO] [stdout] test src/c2.rs - c2::C2Params (line 621) ... ok
[INFO] [stdout] test src/standard.rs - standard::StandardHistogram (line 169) ... ok
[INFO] [stdout] test src/standard.rs - standard::StandardHistogram::to_compact (line 230) ... ok
[INFO] [stdout] test src/c2.rs - c2::CompressedParams (line 449) ... ok
[INFO] [stdout] test src/standard.rs - standard::StandardHistogram::to_compressed (line 289) ... ok
[INFO] [stdout] test src/standard.rs - standard::StandardHistogram::to_c2 (line 323) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.94s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "10cc557aa6e7048b350bdb96423c68df1e85dd3a74c2f31880f90dbab4f06efb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10cc557aa6e7048b350bdb96423c68df1e85dd3a74c2f31880f90dbab4f06efb", kill_on_drop: false }`
[INFO] [stdout] 10cc557aa6e7048b350bdb96423c68df1e85dd3a74c2f31880f90dbab4f06efb