[INFO] fetching crate sequence_buffer 0.1.0...
[INFO] testing sequence_buffer-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate sequence_buffer 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate sequence_buffer 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 sequence_buffer 0.1.0
[INFO] finished tweaking crates.io crate sequence_buffer 0.1.0
[INFO] tweaked toml for crates.io crate sequence_buffer 0.1.0 written to /workspace/builds/worker-8/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-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e62deea40cdf26f2677d75bea0424aca4ce1d9553a64dc6292732854eb117ea
[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" "4e62deea40cdf26f2677d75bea0424aca4ce1d9553a64dc6292732854eb117ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e62deea40cdf26f2677d75bea0424aca4ce1d9553a64dc6292732854eb117ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e62deea40cdf26f2677d75bea0424aca4ce1d9553a64dc6292732854eb117ea", kill_on_drop: false }`
[INFO] [stdout] 4e62deea40cdf26f2677d75bea0424aca4ce1d9553a64dc6292732854eb117ea
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 6534a3dcd7a38345dfd8c163087242592f69fbd1aeaae9fb80e31f47e568c110
[INFO] running `Command { std: "docker" "start" "-a" "6534a3dcd7a38345dfd8c163087242592f69fbd1aeaae9fb80e31f47e568c110", kill_on_drop: false }`
[INFO] [stderr]    Compiling sequence_buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "6534a3dcd7a38345dfd8c163087242592f69fbd1aeaae9fb80e31f47e568c110", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6534a3dcd7a38345dfd8c163087242592f69fbd1aeaae9fb80e31f47e568c110", kill_on_drop: false }`
[INFO] [stdout] 6534a3dcd7a38345dfd8c163087242592f69fbd1aeaae9fb80e31f47e568c110
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--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] e37a113f1ab5161aa610ab75d2fdc57564ab80d5b845b710a469fa9ce7d5c6c6
[INFO] running `Command { std: "docker" "start" "-a" "e37a113f1ab5161aa610ab75d2fdc57564ab80d5b845b710a469fa9ce7d5c6c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling sequence_buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "e37a113f1ab5161aa610ab75d2fdc57564ab80d5b845b710a469fa9ce7d5c6c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e37a113f1ab5161aa610ab75d2fdc57564ab80d5b845b710a469fa9ce7d5c6c6", kill_on_drop: false }`
[INFO] [stdout] e37a113f1ab5161aa610ab75d2fdc57564ab80d5b845b710a469fa9ce7d5c6c6
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c08e91bb280c207bc879d0e31281af3eb5442b64b3f199669846f3a89b99169a
[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" "c08e91bb280c207bc879d0e31281af3eb5442b64b3f199669846f3a89b99169a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/sequence_buffer-97491f8f798141fc
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sequence_buffer
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::insert_test ... ok
[INFO] [stdout] test tests::remove_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "c08e91bb280c207bc879d0e31281af3eb5442b64b3f199669846f3a89b99169a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c08e91bb280c207bc879d0e31281af3eb5442b64b3f199669846f3a89b99169a", kill_on_drop: false }`
[INFO] [stdout] c08e91bb280c207bc879d0e31281af3eb5442b64b3f199669846f3a89b99169a