[INFO] fetching crate jheap_histo 0.1.0...
[INFO] testing jheap_histo-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate jheap_histo 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate jheap_histo 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jheap_histo 0.1.0
[INFO] finished tweaking crates.io crate jheap_histo 0.1.0
[INFO] tweaked toml for crates.io crate jheap_histo 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 1f5fee75409b67a51a7010b4069d0744c1870f7e7ef4cede126433a708ba2744
[INFO] running `Command { std: "docker" "start" "-a" "1f5fee75409b67a51a7010b4069d0744c1870f7e7ef4cede126433a708ba2744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f5fee75409b67a51a7010b4069d0744c1870f7e7ef4cede126433a708ba2744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f5fee75409b67a51a7010b4069d0744c1870f7e7ef4cede126433a708ba2744", kill_on_drop: false }`
[INFO] [stdout] 1f5fee75409b67a51a7010b4069d0744c1870f7e7ef4cede126433a708ba2744
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dd1754567f7b2e7aaeca42bf7c49b5c73c865e85da240a4bc94e8a9e451881c
[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" "7dd1754567f7b2e7aaeca42bf7c49b5c73c865e85da240a4bc94e8a9e451881c", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.0.0
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling combine v4.5.1
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling thiserror v1.0.23
[INFO] [stderr]    Compiling jheap_histo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.65s
[INFO] running `Command { std: "docker" "inspect" "7dd1754567f7b2e7aaeca42bf7c49b5c73c865e85da240a4bc94e8a9e451881c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dd1754567f7b2e7aaeca42bf7c49b5c73c865e85da240a4bc94e8a9e451881c", kill_on_drop: false }`
[INFO] [stdout] 7dd1754567f7b2e7aaeca42bf7c49b5c73c865e85da240a4bc94e8a9e451881c
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e643eafbbe1e0c3d48de33ab25de000987da01829aac140dd8365bb570d4b494
[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" "e643eafbbe1e0c3d48de33ab25de000987da01829aac140dd8365bb570d4b494", kill_on_drop: false }`
[INFO] [stderr]    Compiling jheap_histo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.39s
[INFO] running `Command { std: "docker" "inspect" "e643eafbbe1e0c3d48de33ab25de000987da01829aac140dd8365bb570d4b494", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e643eafbbe1e0c3d48de33ab25de000987da01829aac140dd8365bb570d4b494", kill_on_drop: false }`
[INFO] [stdout] e643eafbbe1e0c3d48de33ab25de000987da01829aac140dd8365bb570d4b494
[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=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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e4eb533bd070163656a5eba3e5aaa793ceb9d2c8104f644fc29bff146d8d945d
[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" "e4eb533bd070163656a5eba3e5aaa793ceb9d2c8104f644fc29bff146d8d945d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/jheap_histo-3d8453b3e72795fe
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test histo::tests::parse_with_header_test ... ok
[INFO] [stdout] test histo::tests::parse_entry_test ... ok
[INFO] [stdout] test histo::tests::open_histogram_with_timestamp_test ... ok
[INFO] [stdout] test histo::tests::parse_with_module_header_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.52s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests jheap_histo
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e4eb533bd070163656a5eba3e5aaa793ceb9d2c8104f644fc29bff146d8d945d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4eb533bd070163656a5eba3e5aaa793ceb9d2c8104f644fc29bff146d8d945d", kill_on_drop: false }`
[INFO] [stdout] e4eb533bd070163656a5eba3e5aaa793ceb9d2c8104f644fc29bff146d8d945d