[INFO] fetching crate rs_trie 0.1.0...
[INFO] testing rs_trie-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate rs_trie 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate rs_trie 0.1.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rs_trie 0.1.0
[INFO] finished tweaking crates.io crate rs_trie 0.1.0
[INFO] tweaked toml for crates.io crate rs_trie 0.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate rs_trie 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ca45265de1123d705c9e06c69f2de38c576ca2e9f9db5eeca8a27a08fcfb8092
[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" "ca45265de1123d705c9e06c69f2de38c576ca2e9f9db5eeca8a27a08fcfb8092", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca45265de1123d705c9e06c69f2de38c576ca2e9f9db5eeca8a27a08fcfb8092", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca45265de1123d705c9e06c69f2de38c576ca2e9f9db5eeca8a27a08fcfb8092", kill_on_drop: false }`
[INFO] [stdout] ca45265de1123d705c9e06c69f2de38c576ca2e9f9db5eeca8a27a08fcfb8092
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a6375e39f9ecbf93d0a2d7e4540dde72bb6c769d763a2175540526a930875519
[INFO] running `Command { std: "docker" "start" "-a" "a6375e39f9ecbf93d0a2d7e4540dde72bb6c769d763a2175540526a930875519", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs_trie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `TrieNode`
[INFO] [stdout]   --> src/main.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | struct TrieNode {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `trie_contains`
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn trie_contains(t: &mut LinkedList<TrieNode>, c: char) -> Option<&mut TrieNode> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_if_in_trie`
[INFO] [stdout]   --> src/main.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn check_if_in_trie(t: &mut LinkedList<TrieNode>, s: &str) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `insert_into_trie`
[INFO] [stdout]   --> src/main.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn insert_into_trie(mut t: &mut LinkedList<TrieNode>, s: &str) {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "a6375e39f9ecbf93d0a2d7e4540dde72bb6c769d763a2175540526a930875519", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6375e39f9ecbf93d0a2d7e4540dde72bb6c769d763a2175540526a930875519", kill_on_drop: false }`
[INFO] [stdout] a6375e39f9ecbf93d0a2d7e4540dde72bb6c769d763a2175540526a930875519
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 718d319c8e4923afee1de47b8e8e498b8b9ccbfe8024d0936c9722c0c158406f
[INFO] running `Command { std: "docker" "start" "-a" "718d319c8e4923afee1de47b8e8e498b8b9ccbfe8024d0936c9722c0c158406f", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs_trie v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "718d319c8e4923afee1de47b8e8e498b8b9ccbfe8024d0936c9722c0c158406f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "718d319c8e4923afee1de47b8e8e498b8b9ccbfe8024d0936c9722c0c158406f", kill_on_drop: false }`
[INFO] [stdout] 718d319c8e4923afee1de47b8e8e498b8b9ccbfe8024d0936c9722c0c158406f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f42bfb34c190aa315eb7916d4d2be43a76f7712d0df464adb2fe7f0b0f7f2f23
[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" "f42bfb34c190aa315eb7916d4d2be43a76f7712d0df464adb2fe7f0b0f7f2f23", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rs_trie-3f946dff46d36789
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::run_tests ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f42bfb34c190aa315eb7916d4d2be43a76f7712d0df464adb2fe7f0b0f7f2f23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f42bfb34c190aa315eb7916d4d2be43a76f7712d0df464adb2fe7f0b0f7f2f23", kill_on_drop: false }`
[INFO] [stdout] f42bfb34c190aa315eb7916d4d2be43a76f7712d0df464adb2fe7f0b0f7f2f23