[INFO] fetching crate jsondata 0.8.0...
[INFO] checking jsondata-0.8.0 against 1.55.0 for beta-1.56-3
[INFO] extracting crate jsondata 0.8.0 into /workspace/builds/worker-105/source
[INFO] validating manifest of crates.io crate jsondata 0.8.0 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] started tweaking crates.io crate jsondata 0.8.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate jsondata 0.8.0
[INFO] tweaked toml for crates.io crate jsondata 0.8.0 written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate crates.io crate jsondata 0.8.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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] e2946d0c2fa61115445bde33d356c0c44ebf7fc40e31e9642f42f26f553561f4
[INFO] running `Command { std: "docker" "start" "-a" "e2946d0c2fa61115445bde33d356c0c44ebf7fc40e31e9642f42f26f553561f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2946d0c2fa61115445bde33d356c0c44ebf7fc40e31e9642f42f26f553561f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2946d0c2fa61115445bde33d356c0c44ebf7fc40e31e9642f42f26f553561f4", kill_on_drop: false }`
[INFO] [stdout] e2946d0c2fa61115445bde33d356c0c44ebf7fc40e31e9642f42f26f553561f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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] cf33fe78fc408c73531689b4dd790c938e73bd8af8f1a985ef21d4cea62b29c8
[INFO] running `Command { std: "docker" "start" "-a" "cf33fe78fc408c73531689b4dd790c938e73bd8af8f1a985ef21d4cea62b29c8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking unicode_reader v0.1.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking regex v1.4.4
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking quickcheck v0.7.2
[INFO] [stderr]    Compiling syn-mid v0.5.3
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]    Compiling jsondata-derive v0.1.0
[INFO] [stderr]     Checking jsondata v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:194:1
[INFO] [stdout]     |
[INFO] [stdout] 194 | #![feature(total_cmp)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:194:1
[INFO] [stdout]     |
[INFO] [stdout] 194 | #![feature(total_cmp)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jsondata` due to 2 previous errors
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "cf33fe78fc408c73531689b4dd790c938e73bd8af8f1a985ef21d4cea62b29c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf33fe78fc408c73531689b4dd790c938e73bd8af8f1a985ef21d4cea62b29c8", kill_on_drop: false }`
[INFO] [stdout] cf33fe78fc408c73531689b4dd790c938e73bd8af8f1a985ef21d4cea62b29c8
