[INFO] updating cached repository https://github.com/MackieLoeffel/rusty-jvm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6eacfb29a6941c15c43925902a0faaf6ff67a6fe
[INFO] testing MackieLoeffel/rusty-jvm against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMackieLoeffel%2Frusty-jvm" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MackieLoeffel/rusty-jvm on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MackieLoeffel/rusty-jvm
[INFO] finished tweaking git repo https://github.com/MackieLoeffel/rusty-jvm
[INFO] tweaked toml for git repo https://github.com/MackieLoeffel/rusty-jvm written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/MackieLoeffel/rusty-jvm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70256e175313fdf4dc0aaad8b5dc9b4c55c33a8828c3476cf293d9377e163aca
[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" "70256e175313fdf4dc0aaad8b5dc9b4c55c33a8828c3476cf293d9377e163aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70256e175313fdf4dc0aaad8b5dc9b4c55c33a8828c3476cf293d9377e163aca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70256e175313fdf4dc0aaad8b5dc9b4c55c33a8828c3476cf293d9377e163aca", kill_on_drop: false }`
[INFO] [stdout] 70256e175313fdf4dc0aaad8b5dc9b4c55c33a8828c3476cf293d9377e163aca
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14629b90a74a531752b501af165d8c0cc42f4cf049ae0d14b4e5e37cb55db67a
[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" "14629b90a74a531752b501af165d8c0cc42f4cf049ae0d14b4e5e37cb55db67a", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v0.7.1
[INFO] [stderr]    Compiling nom v2.1.0
[INFO] [stderr]    Compiling classfile-parser v0.1.0 (https://github.com/MackieLoeffel/classfile-parser.git#f3ba2d11)
[INFO] [stderr]    Compiling rusty-jvm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:47:32
[INFO] [stdout]    |
[INFO] [stdout] 47 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:49:93
[INFO] [stdout]    |
[INFO] [stdout] 49 |             ClassLoadingError::NoClassDefFound(ref err) => err.as_ref().err().map(|e| e as &error::Error),
[INFO] [stdout]    |                                                                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/class.rs:117:17
[INFO] [stdout]     |
[INFO] [stdout] 117 |             sum += class.instance_fields().iter().map(|f| f.size()).sum();
[INFO] [stdout]     |                 ^^ cannot infer type
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the type argument in the method call
[INFO] [stdout]     |
[INFO] [stdout] 117 |             sum += class.instance_fields().iter().map(|f| f.size()).sum::<S>();
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-jvm`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "14629b90a74a531752b501af165d8c0cc42f4cf049ae0d14b4e5e37cb55db67a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14629b90a74a531752b501af165d8c0cc42f4cf049ae0d14b4e5e37cb55db67a", kill_on_drop: false }`
[INFO] [stdout] 14629b90a74a531752b501af165d8c0cc42f4cf049ae0d14b4e5e37cb55db67a