[INFO] updating cached repository https://github.com/pfpacket/saizefs
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 021bf1524cb5f551ff4a1efe59c4158f1887f56f
[INFO] testing pfpacket/saizefs against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfpacket%2Fsaizefs" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pfpacket/saizefs on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/pfpacket/saizefs
[INFO] finished tweaking git repo https://github.com/pfpacket/saizefs
[INFO] tweaked toml for git repo https://github.com/pfpacket/saizefs written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/pfpacket/saizefs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 0515013aa1cf596a9bcb60addb6ef6e88e2ec7ee0da4d5bde876e59573b5240d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "0515013aa1cf596a9bcb60addb6ef6e88e2ec7ee0da4d5bde876e59573b5240d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling fallible-streaming-iterator v0.1.9
[INFO] [stderr]    Compiling fallible-iterator v0.2.0
[INFO] [stderr]    Compiling libsqlite3-sys v0.18.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling regex v1.3.7
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling net2 v0.2.34
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rusqlite v0.23.1
[INFO] [stderr]    Compiling rust-9p v0.0.1 (https://github.com/pfpacket/rust-9p#01cf9c60)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/git/checkouts/rust-9p-f88c8d44113bf8e0/01cf9c6/src/lib.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![feature(try_trait)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `rust-9p`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "0515013aa1cf596a9bcb60addb6ef6e88e2ec7ee0da4d5bde876e59573b5240d"`
[INFO] running `"docker" "rm" "-f" "0515013aa1cf596a9bcb60addb6ef6e88e2ec7ee0da4d5bde876e59573b5240d"`
[INFO] [stdout] 0515013aa1cf596a9bcb60addb6ef6e88e2ec7ee0da4d5bde876e59573b5240d