[INFO] cloning repository https://github.com/mopp/Axel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mopp/Axel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmopp%2FAxel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmopp%2FAxel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2f14ca29a02276a059c2a5a4cb79f28ac10d5fae
[INFO] testing mopp/Axel against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmopp%2FAxel" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mopp/Axel on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-11/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" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b6c2b053c6957810a0449532b74ed1a58d1a851bbd436b9a34c3b8440ab9843b
[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" "b6c2b053c6957810a0449532b74ed1a58d1a851bbd436b9a34c3b8440ab9843b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b6c2b053c6957810a0449532b74ed1a58d1a851bbd436b9a34c3b8440ab9843b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6c2b053c6957810a0449532b74ed1a58d1a851bbd436b9a34c3b8440ab9843b", kill_on_drop: false }`
[INFO] [stdout] b6c2b053c6957810a0449532b74ed1a58d1a851bbd436b9a34c3b8440ab9843b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2acedb700f07849c4ea2edb9e4c958052ec7f3164425b1b79424b71df3ec895
[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" "c2acedb700f07849c4ea2edb9e4c958052ec7f3164425b1b79424b71df3ec895", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling nodrop v0.1.13
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling ux v0.1.3
[INFO] [stderr]    Compiling spin v0.4.10
[INFO] [stderr]    Compiling bitfield v0.13.1
[INFO] [stderr]    Compiling static_assertions v0.3.1
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling rlibc v1.0.0
[INFO] [stderr]    Compiling intrusive-collections v0.7.8
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/intrusive-collections-0.7.8/src/lib.rs:278:13
[INFO] [stdout]     |
[INFO] [stdout] 278 |     feature(const_fn, allow_internal_unstable)
[INFO] [stdout]     |             ^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling multiboot2 v0.7.1 (https://github.com/phil-opp/multiboot2-elf64.git#b80bb185)
[INFO] [stdout] error: `allow_internal_unstable` expects a 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 array-init v0.0.4
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `intrusive-collections` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c2acedb700f07849c4ea2edb9e4c958052ec7f3164425b1b79424b71df3ec895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2acedb700f07849c4ea2edb9e4c958052ec7f3164425b1b79424b71df3ec895", kill_on_drop: false }`
[INFO] [stdout] c2acedb700f07849c4ea2edb9e4c958052ec7f3164425b1b79424b71df3ec895