[INFO] fetching crate concat-with 0.2.5...
[INFO] testing concat-with-0.2.5 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate concat-with 0.2.5 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate concat-with 0.2.5 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concat-with 0.2.5
[INFO] finished tweaking crates.io crate concat-with 0.2.5
[INFO] tweaked toml for crates.io crate concat-with 0.2.5 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 0f26bea98a802d0e7896ad237902a2d4eedb8faf6a05402b268e7a650d0cd269
[INFO] running `Command { std: "docker" "start" "-a" "0f26bea98a802d0e7896ad237902a2d4eedb8faf6a05402b268e7a650d0cd269", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f26bea98a802d0e7896ad237902a2d4eedb8faf6a05402b268e7a650d0cd269", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f26bea98a802d0e7896ad237902a2d4eedb8faf6a05402b268e7a650d0cd269", kill_on_drop: false }`
[INFO] [stdout] 0f26bea98a802d0e7896ad237902a2d4eedb8faf6a05402b268e7a650d0cd269
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0eba14e9af878de4a5b855da507a74d3bfc76876f29204b932024dd11c609211
[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" "0eba14e9af878de4a5b855da507a74d3bfc76876f29204b932024dd11c609211", kill_on_drop: false }`
[INFO] [stderr]    Compiling concat-with v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "0eba14e9af878de4a5b855da507a74d3bfc76876f29204b932024dd11c609211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eba14e9af878de4a5b855da507a74d3bfc76876f29204b932024dd11c609211", kill_on_drop: false }`
[INFO] [stdout] 0eba14e9af878de4a5b855da507a74d3bfc76876f29204b932024dd11c609211
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f1efada93beb1253079e4825f9693daefbd8b2719d772d0461cc871b8110e1d
[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" "9f1efada93beb1253079e4825f9693daefbd8b2719d772d0461cc871b8110e1d", kill_on_drop: false }`
[INFO] [stderr]    Compiling concat-with v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "9f1efada93beb1253079e4825f9693daefbd8b2719d772d0461cc871b8110e1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f1efada93beb1253079e4825f9693daefbd8b2719d772d0461cc871b8110e1d", kill_on_drop: false }`
[INFO] [stdout] 9f1efada93beb1253079e4825f9693daefbd8b2719d772d0461cc871b8110e1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 879edf71ff7e885fb5f7f55cab28f6b3fb614dc3bbc8e30afdd7e3dde7686f4d
[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" "879edf71ff7e885fb5f7f55cab28f6b3fb614dc3bbc8e30afdd7e3dde7686f4d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/concat_with-1c768b9ad96121c9
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests concat-with
[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] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] test src/lib.rs - concat_line (line 257) ... ok
[INFO] [stdout] test src/lib.rs - concat_impl (line 209) ... ok
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] test src/lib.rs - concat (line 50) ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.47s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "879edf71ff7e885fb5f7f55cab28f6b3fb614dc3bbc8e30afdd7e3dde7686f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "879edf71ff7e885fb5f7f55cab28f6b3fb614dc3bbc8e30afdd7e3dde7686f4d", kill_on_drop: false }`
[INFO] [stdout] 879edf71ff7e885fb5f7f55cab28f6b3fb614dc3bbc8e30afdd7e3dde7686f4d