[INFO] crate jagged_array 0.2.4 is already in cache
[INFO] checking jagged_array-0.2.4 against try#d7b51666469c792a8a3f40849607739bae1e705e for pr-71665
[INFO] extracting crate jagged_array 0.2.4 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate jagged_array 0.2.4 on toolchain d7b51666469c792a8a3f40849607739bae1e705e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate jagged_array 0.2.4
[INFO] finished tweaking crates.io crate jagged_array 0.2.4
[INFO] tweaked toml for crates.io crate jagged_array 0.2.4 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d7b51666469c792a8a3f40849607739bae1e705e" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+d7b51666469c792a8a3f40849607739bae1e705e" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6fa80d27b1c1b09d35708f3207f10dc382f1546e224e71badd155ad668ace4fc
[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" "6fa80d27b1c1b09d35708f3207f10dc382f1546e224e71badd155ad668ace4fc"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking streaming-iterator v0.1.5
[INFO] [stderr]     Checking try_opt v0.1.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking jagged_array v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr] warning: unused import: `std::iter::FromIterator`
[INFO] [stderr]  --> benches/jagged2.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::iter::FromIterator;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `XorShiftRng`
[INFO] [stderr]   --> benches/jagged2.rs:10:17
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rand::{Rng, XorShiftRng};
[INFO] [stderr]    |                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> benches/jagged2.rs:23:9
[INFO] [stderr]    |
[INFO] [stderr] 23 |         (0..(4*i % 300))
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.43s
[INFO] running `"docker" "inspect" "6fa80d27b1c1b09d35708f3207f10dc382f1546e224e71badd155ad668ace4fc"`
[INFO] running `"docker" "rm" "-f" "6fa80d27b1c1b09d35708f3207f10dc382f1546e224e71badd155ad668ace4fc"`
[INFO] [stdout] 6fa80d27b1c1b09d35708f3207f10dc382f1546e224e71badd155ad668ace4fc