[INFO] updating cached repository https://github.com/krzkaczor/rust-fun
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0627e8ba2d2d672fd61cad3301eafd24a0eb8000
[INFO] checking krzkaczor/rust-fun against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkrzkaczor%2Frust-fun" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/krzkaczor/rust-fun on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/krzkaczor/rust-fun
[INFO] finished tweaking git repo https://github.com/krzkaczor/rust-fun
[INFO] tweaked toml for git repo https://github.com/krzkaczor/rust-fun written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/krzkaczor/rust-fun already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 72df733bdf8851c787a72e6b48dddef08e7f00425e1c419268457b62e5f650ce
[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" "72df733bdf8851c787a72e6b48dddef08e7f00425e1c419268457b62e5f650ce"`
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]     Checking rust-fun v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling memoffset v0.5.2
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking criterion-plot v0.4.0
[INFO] [stderr]     Checking tinytemplate v1.0.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_xoshiro v0.3.1
[INFO] [stderr]     Checking rand_os v0.2.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]     Checking criterion v0.3.0
[INFO] [stderr] warning: value assigned to `c` is never read
[INFO] [stderr]  --> bench/my_benchmark.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut c = 0u64;
[INFO] [stderr]   |             ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]   = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.97s
[INFO] running `"docker" "inspect" "72df733bdf8851c787a72e6b48dddef08e7f00425e1c419268457b62e5f650ce"`
[INFO] running `"docker" "rm" "-f" "72df733bdf8851c787a72e6b48dddef08e7f00425e1c419268457b62e5f650ce"`
[INFO] [stdout] 72df733bdf8851c787a72e6b48dddef08e7f00425e1c419268457b62e5f650ce