[INFO] fetching crate flatrv-interp 0.1.0...
[INFO] checking flatrv-interp-0.1.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate flatrv-interp 0.1.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate flatrv-interp 0.1.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flatrv-interp 0.1.0
[INFO] finished tweaking crates.io crate flatrv-interp 0.1.0
[INFO] tweaked toml for crates.io crate flatrv-interp 0.1.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate flatrv-interp 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] f0d2be1322a3c753aa4161fb7e15b1b66aee4052c7b60dcce3a7f6544f7692a4
[INFO] running `Command { std: "docker" "start" "-a" "f0d2be1322a3c753aa4161fb7e15b1b66aee4052c7b60dcce3a7f6544f7692a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0d2be1322a3c753aa4161fb7e15b1b66aee4052c7b60dcce3a7f6544f7692a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0d2be1322a3c753aa4161fb7e15b1b66aee4052c7b60dcce3a7f6544f7692a4", kill_on_drop: false }`
[INFO] [stdout] f0d2be1322a3c753aa4161fb7e15b1b66aee4052c7b60dcce3a7f6544f7692a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--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] b2cdb494ed654e5b76e21303182cbdba4a9b75e10e491b2cfb02137f15005879
[INFO] running `Command { std: "docker" "start" "-a" "b2cdb494ed654e5b76e21303182cbdba4a9b75e10e491b2cfb02137f15005879", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking scroll v0.10.1
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking goblin v0.1.3
[INFO] [stderr]     Checking flatrv v0.1.0
[INFO] [stdout] error: flatrv depends on release mode for correctness
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/flatrv-0.1.0/src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     compile_error!("flatrv depends on release mode for correctness");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flatrv`.
[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" "b2cdb494ed654e5b76e21303182cbdba4a9b75e10e491b2cfb02137f15005879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2cdb494ed654e5b76e21303182cbdba4a9b75e10e491b2cfb02137f15005879", kill_on_drop: false }`
[INFO] [stdout] b2cdb494ed654e5b76e21303182cbdba4a9b75e10e491b2cfb02137f15005879