[INFO] fetching crate fuzzcheck 0.2.1...
[INFO] checking fuzzcheck-0.2.1 against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] extracting crate fuzzcheck 0.2.1 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate fuzzcheck 0.2.1 on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fuzzcheck 0.2.1
[INFO] finished tweaking crates.io crate fuzzcheck 0.2.1
[INFO] tweaked toml for crates.io crate fuzzcheck 0.2.1 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=forbid" "-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" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aa0c99bad64c2c98f9f33b8483f8020170331c9aa42d6234a7939e5c1f5e6ee3
[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" "aa0c99bad64c2c98f9f33b8483f8020170331c9aa42d6234a7939e5c1f5e6ee3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking fuzzcheck_arg_parser v0.2.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking fuzzcheck v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: constant is never used: `EWOULDBLOCK`
[INFO] [stderr]    --> src/nix_subset/errno.rs:816:5
[INFO] [stderr]     |
[INFO] [stderr] 816 |     pub const EWOULDBLOCK: Errno = Errno::EAGAIN;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `EDEADLOCK`
[INFO] [stderr]    --> src/nix_subset/errno.rs:817:5
[INFO] [stderr]     |
[INFO] [stderr] 817 |     pub const EDEADLOCK: Errno = Errno::EDEADLK;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ENOTSUP`
[INFO] [stderr]    --> src/nix_subset/errno.rs:818:5
[INFO] [stderr]     |
[INFO] [stderr] 818 |     pub const ENOTSUP: Errno = Errno::EOPNOTSUPP;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `type_of_thread_id`
[INFO] [stderr]    --> src/nix_subset/signal.rs:423:1
[INFO] [stderr]     |
[INFO] [stderr] 423 | pub type type_of_thread_id = libc::pid_t;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `EWOULDBLOCK`
[INFO] [stderr]    --> src/nix_subset/errno.rs:816:5
[INFO] [stderr]     |
[INFO] [stderr] 816 |     pub const EWOULDBLOCK: Errno = Errno::EAGAIN;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `EDEADLOCK`
[INFO] [stderr]    --> src/nix_subset/errno.rs:817:5
[INFO] [stderr]     |
[INFO] [stderr] 817 |     pub const EDEADLOCK: Errno = Errno::EDEADLK;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `ENOTSUP`
[INFO] [stderr]    --> src/nix_subset/errno.rs:818:5
[INFO] [stderr]     |
[INFO] [stderr] 818 |     pub const ENOTSUP: Errno = Errno::EOPNOTSUPP;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `type_of_thread_id`
[INFO] [stderr]    --> src/nix_subset/signal.rs:423:1
[INFO] [stderr]     |
[INFO] [stderr] 423 | pub type type_of_thread_id = libc::pid_t;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.25s
[INFO] running `"docker" "inspect" "aa0c99bad64c2c98f9f33b8483f8020170331c9aa42d6234a7939e5c1f5e6ee3"`
[INFO] running `"docker" "rm" "-f" "aa0c99bad64c2c98f9f33b8483f8020170331c9aa42d6234a7939e5c1f5e6ee3"`
[INFO] [stdout] aa0c99bad64c2c98f9f33b8483f8020170331c9aa42d6234a7939e5c1f5e6ee3