[INFO] fetching crate str-concat 0.2.0...
[INFO] testing str-concat-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate str-concat 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate str-concat 0.2.0 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 str-concat 0.2.0
[INFO] finished tweaking crates.io crate str-concat 0.2.0
[INFO] tweaked toml for crates.io crate str-concat 0.2.0 written to /workspace/builds/worker-6/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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] cb8d94831246b55bd1ef7f0d346b19e19c8fb1008094254286b1606099509b81
[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" "cb8d94831246b55bd1ef7f0d346b19e19c8fb1008094254286b1606099509b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb8d94831246b55bd1ef7f0d346b19e19c8fb1008094254286b1606099509b81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb8d94831246b55bd1ef7f0d346b19e19c8fb1008094254286b1606099509b81", kill_on_drop: false }`
[INFO] [stdout] cb8d94831246b55bd1ef7f0d346b19e19c8fb1008094254286b1606099509b81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 050ee0a77bfdf39193802ff94a062498560ce3b460d40283cea5e221244775c2
[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" "050ee0a77bfdf39193802ff94a062498560ce3b460d40283cea5e221244775c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling str-concat v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "050ee0a77bfdf39193802ff94a062498560ce3b460d40283cea5e221244775c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "050ee0a77bfdf39193802ff94a062498560ce3b460d40283cea5e221244775c2", kill_on_drop: false }`
[INFO] [stdout] 050ee0a77bfdf39193802ff94a062498560ce3b460d40283cea5e221244775c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 6461c51d086deb1217ed2bd633f40e68f6a44eec76c0fc260b31d26cf71b370b
[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" "6461c51d086deb1217ed2bd633f40e68f6a44eec76c0fc260b31d26cf71b370b", kill_on_drop: false }`
[INFO] [stderr]    Compiling str-concat v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "6461c51d086deb1217ed2bd633f40e68f6a44eec76c0fc260b31d26cf71b370b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6461c51d086deb1217ed2bd633f40e68f6a44eec76c0fc260b31d26cf71b370b", kill_on_drop: false }`
[INFO] [stdout] 6461c51d086deb1217ed2bd633f40e68f6a44eec76c0fc260b31d26cf71b370b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] ec046dc2ea56d540ed512e88d496171ca583b3179f583eee32b96873e068ce35
[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" "ec046dc2ea56d540ed512e88d496171ca583b3179f583eee32b96873e068ce35", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/str_concat-532d66d7ebe41c89
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::bom ... ok
[INFO] [stdout] test tests::typed_fail ... ok
[INFO] [stdout] test tests::typed_slices ... ok
[INFO] [stdout] test tests::simple_fail ... ok
[INFO] [stdout] test tests::empty_str ... ok
[INFO] [stdout] test tests::simple_success ... ok
[INFO] [stdout] test tests::unordered ... ok
[INFO] [stdout] test tests::zero_width_joiner_combining_grave ... ok
[INFO] [stdout] test tests::zst_fail ... ok
[INFO] [stdout] test tests::zero_width_joiner ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests str-concat
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - concat (line 33) ... ok
[INFO] [stdout] test src/lib.rs - concat_slice (line 99) ... ok
[INFO] [stdout] test src/lib.rs - concat (line 44) ... ok
[INFO] [stdout] test src/lib.rs - concat_unordered (line 191) ... ok
[INFO] [stdout] test src/lib.rs - concat_slice_unordered (line 244) ... ok
[INFO] [stdout] test src/lib.rs - concat_slice (line 112) ... ok
[INFO] [stdout] test src/lib.rs - concat_unordered (line 202) ... ok
[INFO] [stdout] test src/lib.rs - concat_slice_unordered (line 257) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ec046dc2ea56d540ed512e88d496171ca583b3179f583eee32b96873e068ce35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec046dc2ea56d540ed512e88d496171ca583b3179f583eee32b96873e068ce35", kill_on_drop: false }`
[INFO] [stdout] ec046dc2ea56d540ed512e88d496171ca583b3179f583eee32b96873e068ce35