[INFO] fetching crate snowflake 1.3.0...
[INFO] testing snowflake-1.3.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate snowflake 1.3.0 into /workspace/builds/worker-73/source
[INFO] validating manifest of crates.io crate snowflake 1.3.0 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 snowflake 1.3.0
[INFO] finished tweaking crates.io crate snowflake 1.3.0
[INFO] tweaked toml for crates.io crate snowflake 1.3.0 written to /workspace/builds/worker-73/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] 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]  Downloading crates ...
[INFO] [stderr]   Downloaded uuid v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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] affba99ec00d879a77675984f87a115d596320d4565991c12071e437e9bce367
[INFO] running `Command { std: "docker" "start" "-a" "affba99ec00d879a77675984f87a115d596320d4565991c12071e437e9bce367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "affba99ec00d879a77675984f87a115d596320d4565991c12071e437e9bce367", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "affba99ec00d879a77675984f87a115d596320d4565991c12071e437e9bce367", kill_on_drop: false }`
[INFO] [stdout] affba99ec00d879a77675984f87a115d596320d4565991c12071e437e9bce367
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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] 1e775c7c8b815c2bbfdad1ced0dc3eefbd368d4974263864133b22e6a53c7e23
[INFO] running `Command { std: "docker" "start" "-a" "1e775c7c8b815c2bbfdad1ced0dc3eefbd368d4974263864133b22e6a53c7e23", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling snowflake v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/process_unique_id.rs:10:38
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/process_unique_id.rs:15:38
[INFO] [stdout]    |
[INFO] [stdout] 15 | static GLOBAL_COUNTER: AtomicUsize = ATOMIC_USIZE_INIT;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/process_unique_id.rs:22:40
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let old_value = GLOBAL_COUNTER.compare_and_swap(prev, prev + 1, Ordering::Relaxed);
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `Command { std: "docker" "inspect" "1e775c7c8b815c2bbfdad1ced0dc3eefbd368d4974263864133b22e6a53c7e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e775c7c8b815c2bbfdad1ced0dc3eefbd368d4974263864133b22e6a53c7e23", kill_on_drop: false }`
[INFO] [stdout] 1e775c7c8b815c2bbfdad1ced0dc3eefbd368d4974263864133b22e6a53c7e23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-73/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9927d4bfdd9c4ef5e7e4760a4405c24e1f35d8269e5f1b925be9752ee0d50d7f
[INFO] running `Command { std: "docker" "start" "-a" "9927d4bfdd9c4ef5e7e4760a4405c24e1f35d8269e5f1b925be9752ee0d50d7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/process_unique_id.rs:10:38
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/process_unique_id.rs:15:38
[INFO] [stdout]    |
[INFO] [stdout] 15 | static GLOBAL_COUNTER: AtomicUsize = ATOMIC_USIZE_INIT;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling threadpool v1.8.1
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/process_unique_id.rs:22:40
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let old_value = GLOBAL_COUNTER.compare_and_swap(prev, prev + 1, Ordering::Relaxed);
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling uuid v0.5.1
[INFO] [stderr]    Compiling snowflake v1.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:9:19
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![cfg_attr(test, feature(test))]
[INFO] [stdout]   |                   ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/process_unique_id.rs:10:38
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/process_unique_id.rs:15:38
[INFO] [stdout]    |
[INFO] [stdout] 15 | static GLOBAL_COUNTER: AtomicUsize = ATOMIC_USIZE_INIT;
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::sync::atomic::AtomicUsize::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]   --> src/process_unique_id.rs:22:40
[INFO] [stdout]    |
[INFO] [stdout] 22 |         let old_value = GLOBAL_COUNTER.compare_and_swap(prev, prev + 1, Ordering::Relaxed);
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `snowflake` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "9927d4bfdd9c4ef5e7e4760a4405c24e1f35d8269e5f1b925be9752ee0d50d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9927d4bfdd9c4ef5e7e4760a4405c24e1f35d8269e5f1b925be9752ee0d50d7f", kill_on_drop: false }`
[INFO] [stdout] 9927d4bfdd9c4ef5e7e4760a4405c24e1f35d8269e5f1b925be9752ee0d50d7f