[INFO] updating cached repository https://github.com/errorport/exostat
[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] 301eb9d72cd8c4248b876e3cbf7e186fcf3e9c6a
[INFO] checking errorport/exostat against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferrorport%2Fexostat" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/errorport/exostat on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/errorport/exostat
[INFO] finished tweaking git repo https://github.com/errorport/exostat
[INFO] tweaked toml for git repo https://github.com/errorport/exostat written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/errorport/exostat already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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] 43b8cf5c99b37d05a08b1241f06a853f14c0612f7f2ee8bfa06c80dbdcd21ba6
[INFO] running `"docker" "start" "-a" "43b8cf5c99b37d05a08b1241f06a853f14c0612f7f2ee8bfa06c80dbdcd21ba6"`
[INFO] [stderr]     Checking bytesize v0.1.3
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking systemstat v0.1.4
[INFO] [stderr]     Checking exostat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let output = Command::new("xsetroot")
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_output`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `rx_bytes_diff` is never read
[INFO] [stderr]   --> src/main.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let mut rx_bytes_diff = 0i64;
[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] warning: value assigned to `tx_bytes_diff` is never read
[INFO] [stderr]   --> src/main.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let mut tx_bytes_diff = 0i64;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `cycle_lenght` should have an upper case name
[INFO] [stderr]  --> src/main.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | static cycle_lenght: u8 = 200;
[INFO] [stderr]   |        ^^^^^^^^^^^^ help: convert the identifier to upper case: `CYCLE_LENGHT`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let output = Command::new("xsetroot")
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_output`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `rx_bytes_diff` is never read
[INFO] [stderr]   --> src/main.rs:47:17
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let mut rx_bytes_diff = 0i64;
[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] warning: value assigned to `tx_bytes_diff` is never read
[INFO] [stderr]   --> src/main.rs:48:17
[INFO] [stderr]    |
[INFO] [stderr] 48 |         let mut tx_bytes_diff = 0i64;
[INFO] [stderr]    |                 ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `cycle_lenght` should have an upper case name
[INFO] [stderr]  --> src/main.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | static cycle_lenght: u8 = 200;
[INFO] [stderr]   |        ^^^^^^^^^^^^ help: convert the identifier to upper case: `CYCLE_LENGHT`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.16s
[INFO] running `"docker" "inspect" "43b8cf5c99b37d05a08b1241f06a853f14c0612f7f2ee8bfa06c80dbdcd21ba6"`
[INFO] running `"docker" "rm" "-f" "43b8cf5c99b37d05a08b1241f06a853f14c0612f7f2ee8bfa06c80dbdcd21ba6"`
[INFO] [stdout] 43b8cf5c99b37d05a08b1241f06a853f14c0612f7f2ee8bfa06c80dbdcd21ba6