[INFO] fetching crate emitter 0.0.1...
[INFO] testing emitter-0.0.1 against master#5d5ff84130da0d74c6ece368dbe821d8f83fa526 for pr-79296
[INFO] extracting crate emitter 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate emitter 0.0.1 on toolchain 5d5ff84130da0d74c6ece368dbe821d8f83fa526
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate emitter 0.0.1
[INFO] finished tweaking crates.io crate emitter 0.0.1
[INFO] tweaked toml for crates.io crate emitter 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9409f420097fd1d59426a3c9e33b59a20c17a3cd8c69bc5308bae7feefe23a81
[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" "9409f420097fd1d59426a3c9e33b59a20c17a3cd8c69bc5308bae7feefe23a81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9409f420097fd1d59426a3c9e33b59a20c17a3cd8c69bc5308bae7feefe23a81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9409f420097fd1d59426a3c9e33b59a20c17a3cd8c69bc5308bae7feefe23a81", kill_on_drop: false }`
[INFO] [stdout] 9409f420097fd1d59426a3c9e33b59a20c17a3cd8c69bc5308bae7feefe23a81
[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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+5d5ff84130da0d74c6ece368dbe821d8f83fa526" "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] 00e131f0e4eb2ce9572ee3d12c765e5c56aa93dff76c9071204d24a09c1b2966
[INFO] running `Command { std: "docker" "start" "-a" "00e131f0e4eb2ce9572ee3d12c765e5c56aa93dff76c9071204d24a09c1b2966", kill_on_drop: false }`
[INFO] [stderr]    Compiling emitter v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `,`, `:`, `=`, or `>`, found `?`
[INFO] [stdout]   --> src/lib.rs:13:22
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Event<Sized? X>: 'static {}
[INFO] [stdout]    |                      ^ expected one of `,`, `:`, `=`, or `>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `emitter`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "00e131f0e4eb2ce9572ee3d12c765e5c56aa93dff76c9071204d24a09c1b2966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00e131f0e4eb2ce9572ee3d12c765e5c56aa93dff76c9071204d24a09c1b2966", kill_on_drop: false }`
[INFO] [stdout] 00e131f0e4eb2ce9572ee3d12c765e5c56aa93dff76c9071204d24a09c1b2966