[INFO] crate proptest-derive 0.1.2 is already in cache
[INFO] checking proptest-derive-0.1.2 against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] extracting crate proptest-derive 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate proptest-derive 0.1.2 on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate proptest-derive 0.1.2
[INFO] finished tweaking crates.io crate proptest-derive 0.1.2
[INFO] tweaked toml for crates.io crate proptest-derive 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 77a6c24e858e10c5809ff5634c3ff00e6bb12255595842f235ed5c1fa9c1e7d7
[INFO] running `"docker" "start" "-a" "77a6c24e858e10c5809ff5634c3ff00e6bb12255595842f235ed5c1fa9c1e7d7"`
[INFO] [stderr]    Compiling compiletest_rs v0.3.26
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]    Compiling proptest-derive v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking tester v0.6.0
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking proptest v0.9.4
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr] warning: the feature `never_type` has been stable since 1.41.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> tests/skip.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | #![feature(never_type)]
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `never_type` has been stable since 1.41.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> tests/uninhabited-pass.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | #![feature(never_type)]
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `never_type` has been stable since 1.41.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> tests/enum.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 | #![feature(never_type)]
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.07s
[INFO] running `"docker" "inspect" "77a6c24e858e10c5809ff5634c3ff00e6bb12255595842f235ed5c1fa9c1e7d7"`
[INFO] running `"docker" "rm" "-f" "77a6c24e858e10c5809ff5634c3ff00e6bb12255595842f235ed5c1fa9c1e7d7"`
[INFO] [stdout] 77a6c24e858e10c5809ff5634c3ff00e6bb12255595842f235ed5c1fa9c1e7d7