[INFO] fetching crate persistent_rope 0.1.3...
[INFO] testing persistent_rope-0.1.3 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] extracting crate persistent_rope 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate persistent_rope 0.1.3 on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate persistent_rope 0.1.3
[INFO] finished tweaking crates.io crate persistent_rope 0.1.3
[INFO] tweaked toml for crates.io crate persistent_rope 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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" "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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c94c9c11e5df5a49aab9a851853717508664aabf693597590a8899a32ca5b31b
[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" "c94c9c11e5df5a49aab9a851853717508664aabf693597590a8899a32ca5b31b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c94c9c11e5df5a49aab9a851853717508664aabf693597590a8899a32ca5b31b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c94c9c11e5df5a49aab9a851853717508664aabf693597590a8899a32ca5b31b", kill_on_drop: false }`
[INFO] [stdout] c94c9c11e5df5a49aab9a851853717508664aabf693597590a8899a32ca5b31b
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] 35e2a17d8b58b6c24be8668b33d28adb2c86df9b62725c60a94f251327dd729e
[INFO] running `Command { std: "docker" "start" "-a" "35e2a17d8b58b6c24be8668b33d28adb2c86df9b62725c60a94f251327dd729e", kill_on_drop: false }`
[INFO] [stderr]    Compiling persistent_rope v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "35e2a17d8b58b6c24be8668b33d28adb2c86df9b62725c60a94f251327dd729e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35e2a17d8b58b6c24be8668b33d28adb2c86df9b62725c60a94f251327dd729e", kill_on_drop: false }`
[INFO] [stdout] 35e2a17d8b58b6c24be8668b33d28adb2c86df9b62725c60a94f251327dd729e
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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] 1d4cbdcc809a5f44c3f7f8d820dc98f6d05ef62acb5236998636630cb2e95178
[INFO] running `Command { std: "docker" "start" "-a" "1d4cbdcc809a5f44c3f7f8d820dc98f6d05ef62acb5236998636630cb2e95178", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling bytecount v0.5.1
[INFO] [stderr]    Compiling macro-attr v0.2.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling ropey v1.2.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]    Compiling an-rope v0.3.1
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling xi-rope v0.3.0
[INFO] [stderr]    Compiling persistent_rope v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 24.26s
[INFO] running `Command { std: "docker" "inspect" "1d4cbdcc809a5f44c3f7f8d820dc98f6d05ef62acb5236998636630cb2e95178", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d4cbdcc809a5f44c3f7f8d820dc98f6d05ef62acb5236998636630cb2e95178", kill_on_drop: false }`
[INFO] [stdout] 1d4cbdcc809a5f44c3f7f8d820dc98f6d05ef62acb5236998636630cb2e95178
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 398107bf72e03fece8ca8635fa42a4aa624f9440b73c7f93d3ecb1e19fa339a3
[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" "398107bf72e03fece8ca8635fa42a4aa624f9440b73c7f93d3ecb1e19fa339a3", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/persistent_rope-1e3777e4eb7b06e6
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests persistent_rope
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 34 tests
[INFO] [stdout] test src/rope.rs - rope::Rope::eq (line 689) ... ok
[INFO] [stdout] test src/rope.rs - rope::&'a Rope::add (line 619) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::chunks (line 478) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::chars_len (line 59) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::bytes (line 488) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::bytes_len (line 46) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::eq (line 661) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::char_at (line 464) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::chars (line 498) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::concat_char (line 444) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::eq (line 703) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::count_lines (line 99) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::add (line 600) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::concat (line 421) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::insert_at_byte (line 123) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::height (line 85) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::len (line 36) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::insert (line 137) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::insert_char (line 225) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::new (line 26) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::remove_at_byte (line 292) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::insert_char_at_byte (line 193) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::is_empty (line 72) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::insert_range_byte (line 151) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::insert_range (line 172) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::lines (line 508) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::remove (line 320) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::remove_range (line 276) ... ok
[INFO] [stdout] test src/utils.rs - utils::char_to_byte_index (line 15) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::remove_range_byte (line 260) ... ok
[INFO] [stdout] test src/utils.rs - utils::split_at_char_index (line 2) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::to_string (line 635) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::split (line 390) ... ok
[INFO] [stdout] test src/rope.rs - rope::Rope::split_at_byte (line 352) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 34 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "398107bf72e03fece8ca8635fa42a4aa624f9440b73c7f93d3ecb1e19fa339a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "398107bf72e03fece8ca8635fa42a4aa624f9440b73c7f93d3ecb1e19fa339a3", kill_on_drop: false }`
[INFO] [stdout] 398107bf72e03fece8ca8635fa42a4aa624f9440b73c7f93d3ecb1e19fa339a3