[INFO] fetching crate str-buf 1.0.5...
[INFO] testing str-buf-1.0.5 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate str-buf 1.0.5 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate str-buf 1.0.5 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 str-buf 1.0.5
[INFO] finished tweaking crates.io crate str-buf 1.0.5
[INFO] tweaked toml for crates.io crate str-buf 1.0.5 written to /workspace/builds/worker-9/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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] d745f49041ff0e08a7d520a82cb39add2f59c3a1df3a22b6ac2ce00be3df076c
[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" "d745f49041ff0e08a7d520a82cb39add2f59c3a1df3a22b6ac2ce00be3df076c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d745f49041ff0e08a7d520a82cb39add2f59c3a1df3a22b6ac2ce00be3df076c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d745f49041ff0e08a7d520a82cb39add2f59c3a1df3a22b6ac2ce00be3df076c", kill_on_drop: false }`
[INFO] [stdout] d745f49041ff0e08a7d520a82cb39add2f59c3a1df3a22b6ac2ce00be3df076c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 61932cf0a4fcde5f41a00930d8d26a17ad2c30c9861be4f2a00aff1787a2f48d
[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" "61932cf0a4fcde5f41a00930d8d26a17ad2c30c9861be4f2a00aff1787a2f48d", kill_on_drop: false }`
[INFO] [stderr]    Compiling str-buf v1.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "61932cf0a4fcde5f41a00930d8d26a17ad2c30c9861be4f2a00aff1787a2f48d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61932cf0a4fcde5f41a00930d8d26a17ad2c30c9861be4f2a00aff1787a2f48d", kill_on_drop: false }`
[INFO] [stdout] 61932cf0a4fcde5f41a00930d8d26a17ad2c30c9861be4f2a00aff1787a2f48d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 7df6f949f8b6ee3684909ba48dbe4ae8a49a5d1e95a5f16603310fd787fb7db5
[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" "7df6f949f8b6ee3684909ba48dbe4ae8a49a5d1e95a5f16603310fd787fb7db5", kill_on_drop: false }`
[INFO] [stderr]    Compiling str-buf v1.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "7df6f949f8b6ee3684909ba48dbe4ae8a49a5d1e95a5f16603310fd787fb7db5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7df6f949f8b6ee3684909ba48dbe4ae8a49a5d1e95a5f16603310fd787fb7db5", kill_on_drop: false }`
[INFO] [stdout] 7df6f949f8b6ee3684909ba48dbe4ae8a49a5d1e95a5f16603310fd787fb7db5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e0661d5133865e77fd94363232adec0b587f5ab05e0f31c31f8e255cf1e4ab65
[INFO] running `Command { std: "docker" "start" "-a" "e0661d5133865e77fd94363232adec0b587f5ab05e0f31c31f8e255cf1e4ab65", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/str_buf-63c78671c7556be3
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests str-buf
[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 1 test
[INFO] [stdout] test src/lib.rs - StrBuf (line 25) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.37s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e0661d5133865e77fd94363232adec0b587f5ab05e0f31c31f8e255cf1e4ab65", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0661d5133865e77fd94363232adec0b587f5ab05e0f31c31f8e255cf1e4ab65", kill_on_drop: false }`
[INFO] [stdout] e0661d5133865e77fd94363232adec0b587f5ab05e0f31c31f8e255cf1e4ab65