[INFO] cloning repository https://github.com/mit-pdos/distributary
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mit-pdos/distributary" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmit-pdos%2Fdistributary", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmit-pdos%2Fdistributary'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cd639f57e8fa3fa1cdc1ca3a4c7ef3cedbe45c8c
[INFO] checking mit-pdos/distributary against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmit-pdos%2Fdistributary" "/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/mit-pdos/distributary on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-11/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/mit-pdos/distributary
[INFO] finished tweaking git repo https://github.com/mit-pdos/distributary
[INFO] tweaked toml for git repo https://github.com/mit-pdos/distributary written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/tower-rs/tokio-tower.git`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0db37f9aca944f5910bb0cca1b9a3f0ebac601c7e199d4d72abedd334aa46545
[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" "0db37f9aca944f5910bb0cca1b9a3f0ebac601c7e199d4d72abedd334aa46545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0db37f9aca944f5910bb0cca1b9a3f0ebac601c7e199d4d72abedd334aa46545", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0db37f9aca944f5910bb0cca1b9a3f0ebac601c7e199d4d72abedd334aa46545", kill_on_drop: false }`
[INFO] [stdout] 0db37f9aca944f5910bb0cca1b9a3f0ebac601c7e199d4d72abedd334aa46545
[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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf4d04357905dd27c9b6f3f5427611a12a40acb61ba77a5908e964df5554650d
[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" "cf4d04357905dd27c9b6f3f5427611a12a40acb61ba77a5908e964df5554650d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.104
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]     Checking object v0.24.0
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]    Compiling bindgen v0.59.1
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]     Checking hashbag v0.1.3
[INFO] [stderr]    Compiling mysql v18.2.0
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]     Checking left-right v0.11.4
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]    Compiling cookie v0.15.1
[INFO] [stderr]    Compiling io-enum v0.2.6
[INFO] [stderr]    Compiling libloading v0.7.1
[INFO] [stderr]     Checking tower-make v0.3.0
[INFO] [stderr]    Compiling clang-sys v1.2.2
[INFO] [stderr]    Compiling trawler v0.11.0-alpha.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking http-body v0.4.3
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]    Compiling lexical-core v0.6.8
[INFO] [stderr]    Compiling lexical v4.2.1
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]     Checking lexical v5.2.2
[INFO] [stderr]     Checking nom v5.1.2
[INFO] [stderr]    Compiling ctor v0.1.21
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling zookeeper_derive v0.4.1
[INFO] [stderr]    Compiling derive_utils v0.11.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking strawpoll v0.2.2
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking sha2 v0.8.2
[INFO] [stderr]    Compiling jobserver v0.1.24
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]     Checking value-bag v1.0.0-alpha.7
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking time v0.2.27
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking timekeeper v0.3.2
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking unix_socket v0.5.0
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking const-random v0.1.13
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking streamunordered v0.5.2
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]     Checking kv-log-macro v1.0.7
[INFO] [stderr]     Checking conhash v0.4.0
[INFO] [stderr]     Checking term v0.7.0
[INFO] [stderr]     Checking ahash v0.3.8
[INFO] [stderr]     Checking ahash v0.2.19
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]    Compiling cexpr v0.5.0
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_json v1.0.68
[INFO] [stderr]     Checking rust_decimal v1.16.0
[INFO] [stderr]     Checking bigdecimal v0.1.2
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking nom-sql v0.0.11
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking arccstr v1.3.1
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking flurry v0.3.1
[INFO] [stderr]     Checking hashbrown v0.6.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]    Compiling jemalloc-sys v0.3.2
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]     Checking async-global-executor v2.0.2
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking twox-hash v1.6.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking rand_distr v0.4.2
[INFO] [stderr]     Checking histogram-sampler v0.5.0
[INFO] [stderr]     Checking zipf v7.0.0
[INFO] [stderr]     Checking zookeeper v0.5.10
[INFO] [stderr]     Checking lru v0.4.3
[INFO] [stderr]     Checking slog-term v2.8.0
[INFO] [stderr]     Checking async-std v1.10.0
[INFO] [stderr]     Checking evmap v11.0.0-alpha.7
[INFO] [stderr]     Checking zipf v6.1.0
[INFO] [stderr]     Checking memcached-rs v0.4.2
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking assert_infrequent v0.1.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/assert_infrequent-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr]     Checking hdrhistogram v7.3.0
[INFO] [stderr] error: could not compile `assert_infrequent` 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" "cf4d04357905dd27c9b6f3f5427611a12a40acb61ba77a5908e964df5554650d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf4d04357905dd27c9b6f3f5427611a12a40acb61ba77a5908e964df5554650d", kill_on_drop: false }`
[INFO] [stdout] cf4d04357905dd27c9b6f3f5427611a12a40acb61ba77a5908e964df5554650d
