[INFO] fetching crate kstring 1.0.0...
[INFO] testing kstring-1.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate kstring 1.0.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate kstring 1.0.0 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 kstring 1.0.0
[INFO] finished tweaking crates.io crate kstring 1.0.0
[INFO] tweaked toml for crates.io crate kstring 1.0.0 written to /workspace/builds/worker-10/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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 35ac2e197da6199b8bff484a07c6aa723c6553eb17e9000cfe02e40b2d403cdb
[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" "35ac2e197da6199b8bff484a07c6aa723c6553eb17e9000cfe02e40b2d403cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35ac2e197da6199b8bff484a07c6aa723c6553eb17e9000cfe02e40b2d403cdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35ac2e197da6199b8bff484a07c6aa723c6553eb17e9000cfe02e40b2d403cdb", kill_on_drop: false }`
[INFO] [stdout] 35ac2e197da6199b8bff484a07c6aa723c6553eb17e9000cfe02e40b2d403cdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] d0b9a05e921c356c5acf78035c9405f02a635c9408f3ed7771144e312882b3b4
[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" "d0b9a05e921c356c5acf78035c9405f02a635c9408f3ed7771144e312882b3b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling kstring v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "d0b9a05e921c356c5acf78035c9405f02a635c9408f3ed7771144e312882b3b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0b9a05e921c356c5acf78035c9405f02a635c9408f3ed7771144e312882b3b4", kill_on_drop: false }`
[INFO] [stdout] d0b9a05e921c356c5acf78035c9405f02a635c9408f3ed7771144e312882b3b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 8b1404d4594b5b3e42baf84cc7f37148534dfc6ce0cc8b4d9c0fb8676bc5d37d
[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" "8b1404d4594b5b3e42baf84cc7f37148534dfc6ce0cc8b4d9c0fb8676bc5d37d", kill_on_drop: false }`
[INFO] [stderr]    Compiling kstring v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "8b1404d4594b5b3e42baf84cc7f37148534dfc6ce0cc8b4d9c0fb8676bc5d37d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b1404d4594b5b3e42baf84cc7f37148534dfc6ce0cc8b4d9c0fb8676bc5d37d", kill_on_drop: false }`
[INFO] [stdout] 8b1404d4594b5b3e42baf84cc7f37148534dfc6ce0cc8b4d9c0fb8676bc5d37d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] de6799f764597502fd0b0f2fd1f374667865b87f1940caa4bcef4f072539d4a5
[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" "de6799f764597502fd0b0f2fd1f374667865b87f1940caa4bcef4f072539d4a5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/kstring-0df6ca4057d0e6cf
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test r#ref::test::test_size ... ok
[INFO] [stdout] test cow::test::test_size ... ok
[INFO] [stdout] test string::test::test_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kstring
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "de6799f764597502fd0b0f2fd1f374667865b87f1940caa4bcef4f072539d4a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de6799f764597502fd0b0f2fd1f374667865b87f1940caa4bcef4f072539d4a5", kill_on_drop: false }`
[INFO] [stdout] de6799f764597502fd0b0f2fd1f374667865b87f1940caa4bcef4f072539d4a5