[INFO] fetching crate ruby-string 0.1.0...
[INFO] testing ruby-string-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate ruby-string 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ruby-string 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ruby-string 0.1.0
[INFO] finished tweaking crates.io crate ruby-string 0.1.0
[INFO] tweaked toml for crates.io crate ruby-string 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 164c7d60f942f1c3ad7cbad34ec986d3b21da2981ce40415c784f1aea25359c8
[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" "164c7d60f942f1c3ad7cbad34ec986d3b21da2981ce40415c784f1aea25359c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "164c7d60f942f1c3ad7cbad34ec986d3b21da2981ce40415c784f1aea25359c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "164c7d60f942f1c3ad7cbad34ec986d3b21da2981ce40415c784f1aea25359c8", kill_on_drop: false }`
[INFO] [stdout] 164c7d60f942f1c3ad7cbad34ec986d3b21da2981ce40415c784f1aea25359c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 689ad43b5c80fda0c093cad320a4a3bbee15114d4d4e5b993bd433db33bab441
[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" "689ad43b5c80fda0c093cad320a4a3bbee15114d4d4e5b993bd433db33bab441", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruby-string v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "689ad43b5c80fda0c093cad320a4a3bbee15114d4d4e5b993bd433db33bab441", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "689ad43b5c80fda0c093cad320a4a3bbee15114d4d4e5b993bd433db33bab441", kill_on_drop: false }`
[INFO] [stdout] 689ad43b5c80fda0c093cad320a4a3bbee15114d4d4e5b993bd433db33bab441
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dd5cdfe1bc33c5e1ea017049e0c117fa011880e103b6644e8e23eedd443f370
[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" "3dd5cdfe1bc33c5e1ea017049e0c117fa011880e103b6644e8e23eedd443f370", kill_on_drop: false }`
[INFO] [stderr]    Compiling ruby-string v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "3dd5cdfe1bc33c5e1ea017049e0c117fa011880e103b6644e8e23eedd443f370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dd5cdfe1bc33c5e1ea017049e0c117fa011880e103b6644e8e23eedd443f370", kill_on_drop: false }`
[INFO] [stdout] 3dd5cdfe1bc33c5e1ea017049e0c117fa011880e103b6644e8e23eedd443f370
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8d99c204ca24136f2a89273d0ecbf72f9aff48f5ce0bdd9eb354abc0ba3f1cc5
[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" "8d99c204ca24136f2a89273d0ecbf72f9aff48f5ce0bdd9eb354abc0ba3f1cc5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ruby_string-15dda819223bf7e3
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests ruby-string
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/iterator.rs - iterator::Segment::to_interlinear_encoding (line 29) ... ok
[INFO] [stdout] test src/string.rs - string::RubyString::to_interlinear_encoding (line 87) ... ok
[INFO] [stdout] test src/string.rs - string::RubyString::to_plain_text (line 71) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8d99c204ca24136f2a89273d0ecbf72f9aff48f5ce0bdd9eb354abc0ba3f1cc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d99c204ca24136f2a89273d0ecbf72f9aff48f5ce0bdd9eb354abc0ba3f1cc5", kill_on_drop: false }`
[INFO] [stdout] 8d99c204ca24136f2a89273d0ecbf72f9aff48f5ce0bdd9eb354abc0ba3f1cc5