[INFO] fetching crate either-future 0.1.0...
[INFO] testing either-future-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate either-future 0.1.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate either-future 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate either-future 0.1.0
[INFO] finished tweaking crates.io crate either-future 0.1.0
[INFO] tweaked toml for crates.io crate either-future 0.1.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "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] b14b2ad8827fb03e03702dca30451cec8f8163da2c74867ea4a2538bac2e1499
[INFO] running `Command { std: "docker" "start" "-a" "b14b2ad8827fb03e03702dca30451cec8f8163da2c74867ea4a2538bac2e1499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b14b2ad8827fb03e03702dca30451cec8f8163da2c74867ea4a2538bac2e1499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b14b2ad8827fb03e03702dca30451cec8f8163da2c74867ea4a2538bac2e1499", kill_on_drop: false }`
[INFO] [stdout] b14b2ad8827fb03e03702dca30451cec8f8163da2c74867ea4a2538bac2e1499
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", 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] e5fdc079c479e94bc1933f42625dd23112f9eb2afc98148bc766b40aae0e4bfb
[INFO] running `Command { std: "docker" "start" "-a" "e5fdc079c479e94bc1933f42625dd23112f9eb2afc98148bc766b40aae0e4bfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling either-future v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "e5fdc079c479e94bc1933f42625dd23112f9eb2afc98148bc766b40aae0e4bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5fdc079c479e94bc1933f42625dd23112f9eb2afc98148bc766b40aae0e4bfb", kill_on_drop: false }`
[INFO] [stdout] e5fdc079c479e94bc1933f42625dd23112f9eb2afc98148bc766b40aae0e4bfb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", 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] e3affc9c948c86d49432d1de191f6674549eeb5d1c973a590c644a5d8a8066da
[INFO] running `Command { std: "docker" "start" "-a" "e3affc9c948c86d49432d1de191f6674549eeb5d1c973a590c644a5d8a8066da", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling tokio-reactor v0.1.12
[INFO] [stderr]    Compiling tokio-fs v0.1.7
[INFO] [stderr]    Compiling tokio-uds v0.2.7
[INFO] [stderr]    Compiling tokio-udp v0.1.6
[INFO] [stderr]    Compiling tokio-tcp v0.1.4
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling either-future v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0596]: cannot borrow `runtime` as mutable, as it is not declared as mutable
[INFO] [stdout]    --> src/lib.rs:199:32
[INFO] [stdout]     |
[INFO] [stdout] 198 |         let runtime = tokio02::runtime::Runtime::new().expect("Failed to create runtime.");
[INFO] [stdout]     |             ------- help: consider changing this to be mutable: `mut runtime`
[INFO] [stdout] 199 |         assert_eq!(Either::Left(42), runtime.block_on(either_future));
[INFO] [stdout]     |                                      ^^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `runtime` as mutable, as it is not declared as mutable
[INFO] [stdout]    --> src/lib.rs:209:33
[INFO] [stdout]     |
[INFO] [stdout] 208 |         let runtime = tokio02::runtime::Runtime::new().expect("Failed to create runtime.");
[INFO] [stdout]     |             ------- help: consider changing this to be mutable: `mut runtime`
[INFO] [stdout] 209 |         assert_eq!(Either::Right(42), runtime.block_on(either_future));
[INFO] [stdout]     |                                       ^^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `either-future` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "e3affc9c948c86d49432d1de191f6674549eeb5d1c973a590c644a5d8a8066da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3affc9c948c86d49432d1de191f6674549eeb5d1c973a590c644a5d8a8066da", kill_on_drop: false }`
[INFO] [stdout] e3affc9c948c86d49432d1de191f6674549eeb5d1c973a590c644a5d8a8066da