[INFO] updating cached repository https://github.com/mopp/Axel
[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] 2f14ca29a02276a059c2a5a4cb79f28ac10d5fae
[INFO] testing mopp/Axel against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmopp%2FAxel" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mopp/Axel on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mopp/Axel
[INFO] finished tweaking git repo https://github.com/mopp/Axel
[INFO] tweaked toml for git repo https://github.com/mopp/Axel written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/mopp/Axel already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ab8fab6b2d5451e83fe5ed20403ead4ab6d2b2eda453d19fdba0590d7b63cc9
[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" "7ab8fab6b2d5451e83fe5ed20403ead4ab6d2b2eda453d19fdba0590d7b63cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ab8fab6b2d5451e83fe5ed20403ead4ab6d2b2eda453d19fdba0590d7b63cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ab8fab6b2d5451e83fe5ed20403ead4ab6d2b2eda453d19fdba0590d7b63cc9", kill_on_drop: false }`
[INFO] [stdout] 7ab8fab6b2d5451e83fe5ed20403ead4ab6d2b2eda453d19fdba0590d7b63cc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a47dbb4a5cb3bad1fd1cf71af9cf9d333d032fd21bd9ce7a5e54319328788eaa
[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" "a47dbb4a5cb3bad1fd1cf71af9cf9d333d032fd21bd9ce7a5e54319328788eaa", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling ux v0.1.3
[INFO] [stderr]    Compiling usize_conversions v0.2.0
[INFO] [stderr]    Compiling spin v0.4.10
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling intrusive-collections v0.7.8
[INFO] [stderr]    Compiling static_assertions v0.3.1
[INFO] [stderr]    Compiling bitfield v0.13.1
[INFO] [stderr]    Compiling rlibc v1.0.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling array-init v0.0.4
[INFO] [stderr]    Compiling multiboot2 v0.7.1 (https://github.com/phil-opp/multiboot2-elf64.git#b80bb185)
[INFO] [stdout] error: allow_internal_unstable expects list of feature names
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/intrusive-collections-0.7.8/src/adapter.rs:173:1
[INFO] [stdout]     |
[INFO] [stdout] 173 | #[allow_internal_unstable]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr] error: could not compile `intrusive-collections`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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" "a47dbb4a5cb3bad1fd1cf71af9cf9d333d032fd21bd9ce7a5e54319328788eaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a47dbb4a5cb3bad1fd1cf71af9cf9d333d032fd21bd9ce7a5e54319328788eaa", kill_on_drop: false }`
[INFO] [stdout] a47dbb4a5cb3bad1fd1cf71af9cf9d333d032fd21bd9ce7a5e54319328788eaa