[INFO] fetching crate illist 0.1.0...
[INFO] checking illist-0.1.0 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate illist 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate illist 0.1.0 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate illist 0.1.0
[INFO] finished tweaking crates.io crate illist 0.1.0
[INFO] tweaked toml for crates.io crate illist 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd3c180024e57091a8c71540dc808422e8c7302437cc4249ddbe89dc2b411ea1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fd3c180024e57091a8c71540dc808422e8c7302437cc4249ddbe89dc2b411ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd3c180024e57091a8c71540dc808422e8c7302437cc4249ddbe89dc2b411ea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3c180024e57091a8c71540dc808422e8c7302437cc4249ddbe89dc2b411ea1", kill_on_drop: false }`
[INFO] [stdout] fd3c180024e57091a8c71540dc808422e8c7302437cc4249ddbe89dc2b411ea1
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 646e4a6df5ad550ac4bdad8cf7f743839fb84ac687c3607f8279e986c99308a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "646e4a6df5ad550ac4bdad8cf7f743839fb84ac687c3607f8279e986c99308a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking illist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/node.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn empty(prev: Id, next: Id) -> Node<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stdout] error[E0463]: can't find crate for `free_list`
[INFO] [stdout]  --> benches/locality.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate free_list;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `illist`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/node.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 |     pub fn empty(prev: Id, next: Id) -> Node<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "646e4a6df5ad550ac4bdad8cf7f743839fb84ac687c3607f8279e986c99308a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "646e4a6df5ad550ac4bdad8cf7f743839fb84ac687c3607f8279e986c99308a5", kill_on_drop: false }`
[INFO] [stdout] 646e4a6df5ad550ac4bdad8cf7f743839fb84ac687c3607f8279e986c99308a5