[INFO] cloning repository https://github.com/mfranciszkiewicz/golem-core-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mfranciszkiewicz/golem-core-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfranciszkiewicz%2Fgolem-core-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfranciszkiewicz%2Fgolem-core-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f18176ed78a36f689d5d705eec7841e720402f1
[INFO] checking mfranciszkiewicz/golem-core-rs against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmfranciszkiewicz%2Fgolem-core-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mfranciszkiewicz/golem-core-rs on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mfranciszkiewicz/golem-core-rs
[INFO] finished tweaking git repo https://github.com/mfranciszkiewicz/golem-core-rs
[INFO] tweaked toml for git repo https://github.com/mfranciszkiewicz/golem-core-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mfranciszkiewicz/golem-core-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pyo3cls v0.2.7
[INFO] [stderr]   Downloaded backtrace v0.3.8
[INFO] [stderr]   Downloaded serde_json v1.0.21
[INFO] [stderr]   Downloaded cargo_metadata v0.5.6
[INFO] [stderr]   Downloaded mio-uds v0.6.6
[INFO] [stderr]   Downloaded trust-dns-resolver v0.8.2
[INFO] [stderr]   Downloaded tokio-fs v0.1.1
[INFO] [stderr]   Downloaded bincode v0.9.2
[INFO] [stderr]   Downloaded skeptic v0.13.3
[INFO] [stderr]   Downloaded crossbeam-channel v0.1.3
[INFO] [stderr]   Downloaded pyo3 v0.2.7
[INFO] [stderr]   Downloaded actix v0.5.8
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.4
[INFO] [stderr]   Downloaded spin v0.4.9
[INFO] [stderr]   Downloaded trust-dns-proto v0.3.3
[INFO] [stderr]   Downloaded log v0.4.2
[INFO] [stderr]   Downloaded futures v0.1.21
[INFO] [stderr]   Downloaded bytecount v0.3.1
[INFO] [stderr]   Downloaded python3-sys v0.1.3
[INFO] [stderr]   Downloaded cpython v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de1ecfb32cded52e89eab750546fa1475b56a70279d555de0dd3e1b24301d7e2
[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" "de1ecfb32cded52e89eab750546fa1475b56a70279d555de0dd3e1b24301d7e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de1ecfb32cded52e89eab750546fa1475b56a70279d555de0dd3e1b24301d7e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de1ecfb32cded52e89eab750546fa1475b56a70279d555de0dd3e1b24301d7e2", kill_on_drop: false }`
[INFO] [stdout] de1ecfb32cded52e89eab750546fa1475b56a70279d555de0dd3e1b24301d7e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3a546dbaebca24f184502d8c08f2e100dfd7560b6919d9a50e58fc0283bbd6a
[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" "e3a546dbaebca24f184502d8c08f2e100dfd7560b6919d9a50e58fc0283bbd6a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking cfg-if v0.1.3
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking nodrop v0.1.12
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazy_static v1.0.1
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling version_check v0.1.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.8
[INFO] [stderr]     Checking matches v0.1.6
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling same-file v1.0.2
[INFO] [stderr]    Compiling bytecount v0.3.1
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling cpython v0.1.0
[INFO] [stderr]     Checking spin v0.4.9
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling log v0.4.2
[INFO] [stderr]     Checking arrayvec v0.4.7
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.9/src/lib.rs:6:43
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))]
[INFO] [stdout]   |                                           ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spin` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e3a546dbaebca24f184502d8c08f2e100dfd7560b6919d9a50e58fc0283bbd6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3a546dbaebca24f184502d8c08f2e100dfd7560b6919d9a50e58fc0283bbd6a", kill_on_drop: false }`
[INFO] [stdout] e3a546dbaebca24f184502d8c08f2e100dfd7560b6919d9a50e58fc0283bbd6a