[INFO] fetching crate darn 0.1.7...
[INFO] checking darn-0.1.7 against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] extracting crate darn 0.1.7 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate darn 0.1.7 on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate darn 0.1.7
[INFO] finished tweaking crates.io crate darn 0.1.7
[INFO] tweaked toml for crates.io crate darn 0.1.7 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1a0b01e40f7da58eed413c2eb3f1e20c0ecce5ab3edf28bb030e1a64218f090c
[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" "1a0b01e40f7da58eed413c2eb3f1e20c0ecce5ab3edf28bb030e1a64218f090c"`
[INFO] [stderr]    Compiling askama_escape v0.3.0
[INFO] [stderr]    Compiling humansize v1.1.0
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking num-bigint v0.2.6
[INFO] [stderr]     Checking num-iter v0.1.40
[INFO] [stderr]     Checking nanoid v0.3.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking askama_shared v0.9.1
[INFO] [stderr]     Checking num-rational v0.2.3
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]    Compiling askama_derive v0.9.0
[INFO] [stderr]     Checking askama v0.9.0
[INFO] [stderr]     Checking plotly v0.4.0
[INFO] [stderr]     Checking darn v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lib.rs:161:13
[INFO] [stderr]     |
[INFO] [stderr] 161 |         for c in 0..values.shape()[1] {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fs::remove_file(plotly_file);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `c`
[INFO] [stderr]    --> src/lib.rs:161:13
[INFO] [stderr]     |
[INFO] [stderr] 161 |         for c in 0..values.shape()[1] {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_c`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/lib.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fs::remove_file(plotly_file);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.03s
[INFO] running `"docker" "inspect" "1a0b01e40f7da58eed413c2eb3f1e20c0ecce5ab3edf28bb030e1a64218f090c"`
[INFO] running `"docker" "rm" "-f" "1a0b01e40f7da58eed413c2eb3f1e20c0ecce5ab3edf28bb030e1a64218f090c"`
[INFO] [stdout] 1a0b01e40f7da58eed413c2eb3f1e20c0ecce5ab3edf28bb030e1a64218f090c