[INFO] fetching crate gba-proc-macro 0.6.0...
[INFO] testing gba-proc-macro-0.6.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate gba-proc-macro 0.6.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate gba-proc-macro 0.6.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gba-proc-macro 0.6.0
[INFO] finished tweaking crates.io crate gba-proc-macro 0.6.0
[INFO] tweaked toml for crates.io crate gba-proc-macro 0.6.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] fc0fbec764b01aeabb249f3e7add9548a9ad1b7d8b15442b2a342bebd07d431f
[INFO] running `Command { std: "docker" "start" "-a" "fc0fbec764b01aeabb249f3e7add9548a9ad1b7d8b15442b2a342bebd07d431f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc0fbec764b01aeabb249f3e7add9548a9ad1b7d8b15442b2a342bebd07d431f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc0fbec764b01aeabb249f3e7add9548a9ad1b7d8b15442b2a342bebd07d431f", kill_on_drop: false }`
[INFO] [stdout] fc0fbec764b01aeabb249f3e7add9548a9ad1b7d8b15442b2a342bebd07d431f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 76912b369d5dcc2aff80502f56669f86c2917ec5e220c157d58b446591fe3f83
[INFO] running `Command { std: "docker" "start" "-a" "76912b369d5dcc2aff80502f56669f86c2917ec5e220c157d58b446591fe3f83", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling gba-proc-macro v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.29s
[INFO] running `Command { std: "docker" "inspect" "76912b369d5dcc2aff80502f56669f86c2917ec5e220c157d58b446591fe3f83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76912b369d5dcc2aff80502f56669f86c2917ec5e220c157d58b446591fe3f83", kill_on_drop: false }`
[INFO] [stdout] 76912b369d5dcc2aff80502f56669f86c2917ec5e220c157d58b446591fe3f83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fc26653846c39edf3dffb8f7f6132b882596d05dd8345fbbcaa51182748b367
[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" "8fc26653846c39edf3dffb8f7f6132b882596d05dd8345fbbcaa51182748b367", kill_on_drop: false }`
[INFO] [stderr]    Compiling gba-proc-macro v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> tests/the_tests.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_int_wrapping)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gba-proc-macro`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8fc26653846c39edf3dffb8f7f6132b882596d05dd8345fbbcaa51182748b367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc26653846c39edf3dffb8f7f6132b882596d05dd8345fbbcaa51182748b367", kill_on_drop: false }`
[INFO] [stdout] 8fc26653846c39edf3dffb8f7f6132b882596d05dd8345fbbcaa51182748b367