[INFO] fetching crate locustdb 0.3.4...
[INFO] testing locustdb-0.3.4 against 1.55.0 for beta-1.56-1
[INFO] extracting crate locustdb 0.3.4 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate locustdb 0.3.4 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-33/source/rust-toolchain
[INFO] started tweaking crates.io crate locustdb 0.3.4
[INFO] finished tweaking crates.io crate locustdb 0.3.4
[INFO] tweaked toml for crates.io crate locustdb 0.3.4 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate crates.io crate locustdb 0.3.4 already has a lockfile, it will not be regenerated
[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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustyline v1.0.0
[INFO] [stderr]   Downloaded itertools v0.5.10
[INFO] [stderr]   Downloaded sqlparser v0.5.1
[INFO] [stderr]   Downloaded encode_unicode v0.1.3
[INFO] [stderr]   Downloaded seahash v3.0.7
[INFO] [stderr]   Downloaded chrono v0.4.12
[INFO] [stderr]   Downloaded std-semaphore v0.1.0
[INFO] [stderr]   Downloaded locustdb-derive v0.1.0
[INFO] [stderr]   Downloaded lru v0.1.17
[INFO] [stderr]   Downloaded aliasmethod v0.1.0
[INFO] [stderr]   Downloaded capnpc v0.12.4
[INFO] [stderr]   Downloaded capnp v0.12.3
[INFO] [stderr]   Downloaded rocksdb v0.10.1
[INFO] [stderr]   Downloaded bindgen v0.47.3
[INFO] [stderr]   Downloaded librocksdb-sys v5.18.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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] 31999a51ffffdad912bf53f9cecc9e2034940df55e36fbefcaff4cfe63a3e43a
[INFO] running `Command { std: "docker" "start" "-a" "31999a51ffffdad912bf53f9cecc9e2034940df55e36fbefcaff4cfe63a3e43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31999a51ffffdad912bf53f9cecc9e2034940df55e36fbefcaff4cfe63a3e43a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31999a51ffffdad912bf53f9cecc9e2034940df55e36fbefcaff4cfe63a3e43a", kill_on_drop: false }`
[INFO] [stdout] 31999a51ffffdad912bf53f9cecc9e2034940df55e36fbefcaff4cfe63a3e43a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b643c0219202ce741b89f271939023ab16956870c765b933b15dc8897b6f65e
[INFO] running `Command { std: "docker" "start" "-a" "1b643c0219202ce741b89f271939023ab16956870c765b933b15dc8897b6f65e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling once_cell v1.4.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling futures-sink v0.3.5
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling adler32 v1.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling gimli v0.21.0
[INFO] [stderr]    Compiling adler v0.2.2
[INFO] [stderr]    Compiling bitflags v0.4.0
[INFO] [stderr]    Compiling object v0.20.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling locustdb v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling encode_unicode v0.1.3
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling std-semaphore v0.1.0
[INFO] [stderr]    Compiling seahash v3.0.7
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.3
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling futures-task v0.3.5
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling miniz_oxide v0.4.0
[INFO] [stderr]    Compiling futures-channel v0.3.5
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling lru v0.1.17
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling sqlparser v0.5.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling flate2 v1.0.16
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling aliasmethod v0.1.0
[INFO] [stderr]    Compiling chrono v0.4.12
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling addr2line v0.12.2
[INFO] [stderr]    Compiling rustyline v1.0.0
[INFO] [stderr]    Compiling backtrace v0.3.49
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling locustdb-derive 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/locustdb-derive-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene, proc_macro_diagnostic)]
[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] error: could not compile `locustdb-derive` 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" "1b643c0219202ce741b89f271939023ab16956870c765b933b15dc8897b6f65e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b643c0219202ce741b89f271939023ab16956870c765b933b15dc8897b6f65e", kill_on_drop: false }`
[INFO] [stdout] 1b643c0219202ce741b89f271939023ab16956870c765b933b15dc8897b6f65e