[INFO] fetching crate btreec 0.3.0...
[INFO] testing btreec-0.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate btreec 0.3.0 into /workspace/builds/worker-57/source
[INFO] validating manifest of crates.io crate btreec 0.3.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate btreec 0.3.0
[INFO] finished tweaking crates.io crate btreec 0.3.0
[INFO] tweaked toml for crates.io crate btreec 0.3.0 written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19ede252240173496b917b24e24bcfb67c463f80e606d230a6fccf812b3e3622
[INFO] running `Command { std: "docker" "start" "-a" "19ede252240173496b917b24e24bcfb67c463f80e606d230a6fccf812b3e3622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19ede252240173496b917b24e24bcfb67c463f80e606d230a6fccf812b3e3622", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19ede252240173496b917b24e24bcfb67c463f80e606d230a6fccf812b3e3622", kill_on_drop: false }`
[INFO] [stdout] 19ede252240173496b917b24e24bcfb67c463f80e606d230a6fccf812b3e3622
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47329a27cc929370e6cf1a143a2a73b32996f7ed5725142785c6f8fba5d07aaf
[INFO] running `Command { std: "docker" "start" "-a" "47329a27cc929370e6cf1a143a2a73b32996f7ed5725142785c6f8fba5d07aaf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]    Compiling btreec v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.12s
[INFO] running `Command { std: "docker" "inspect" "47329a27cc929370e6cf1a143a2a73b32996f7ed5725142785c6f8fba5d07aaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47329a27cc929370e6cf1a143a2a73b32996f7ed5725142785c6f8fba5d07aaf", kill_on_drop: false }`
[INFO] [stdout] 47329a27cc929370e6cf1a143a2a73b32996f7ed5725142785c6f8fba5d07aaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2381b839b891e96d0fc47a6863d4881084ed98dffd7edaae534347a6afab1a84
[INFO] running `Command { std: "docker" "start" "-a" "2381b839b891e96d0fc47a6863d4881084ed98dffd7edaae534347a6afab1a84", kill_on_drop: false }`
[INFO] [stderr]    Compiling btreec v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "2381b839b891e96d0fc47a6863d4881084ed98dffd7edaae534347a6afab1a84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2381b839b891e96d0fc47a6863d4881084ed98dffd7edaae534347a6afab1a84", kill_on_drop: false }`
[INFO] [stdout] 2381b839b891e96d0fc47a6863d4881084ed98dffd7edaae534347a6afab1a84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d722a60312756358877bc5bad4080e2dbecdee78704380e12c45542842a11645
[INFO] running `Command { std: "docker" "start" "-a" "d722a60312756358877bc5bad4080e2dbecdee78704380e12c45542842a11645", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 5 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/btreec-1bec22baa3e20c10)
[INFO] [stdout] test tests::ascend_descend ... ok
[INFO] [stdout] test tests::btreec_new ... ok
[INFO] [stdout] test tests::basic ... ok
[INFO] [stdout] test tests::min_max_pop ... ok
[INFO] [stderr]    Doc-tests btreec
[INFO] [stdout] test tests::db_item ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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" "d722a60312756358877bc5bad4080e2dbecdee78704380e12c45542842a11645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d722a60312756358877bc5bad4080e2dbecdee78704380e12c45542842a11645", kill_on_drop: false }`
[INFO] [stdout] d722a60312756358877bc5bad4080e2dbecdee78704380e12c45542842a11645