[INFO] updating cached repository https://github.com/Jabbslad/computer_science_problems_in_rust
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4f227beebd4bc119cff1d443469e6430f87c0b7e
[INFO] testing Jabbslad/computer_science_problems_in_rust against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJabbslad%2Fcomputer_science_problems_in_rust" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jabbslad/computer_science_problems_in_rust on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jabbslad/computer_science_problems_in_rust
[INFO] finished tweaking git repo https://github.com/Jabbslad/computer_science_problems_in_rust
[INFO] tweaked toml for git repo https://github.com/Jabbslad/computer_science_problems_in_rust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Jabbslad/computer_science_problems_in_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", 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] 0b55e31f48a7d4d25acfd793a1a765ee00c3ffb4151911c37cdc40eef2e98774
[INFO] running `Command { std: "docker" "start" "-a" "0b55e31f48a7d4d25acfd793a1a765ee00c3ffb4151911c37cdc40eef2e98774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b55e31f48a7d4d25acfd793a1a765ee00c3ffb4151911c37cdc40eef2e98774", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b55e31f48a7d4d25acfd793a1a765ee00c3ffb4151911c37cdc40eef2e98774", kill_on_drop: false }`
[INFO] [stdout] 0b55e31f48a7d4d25acfd793a1a765ee00c3ffb4151911c37cdc40eef2e98774
[INFO] running `Command { std: "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b5537b3685f85519591babb47ab6d77f117036950276c7bda38dddc33e9d434
[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" "0b5537b3685f85519591babb47ab6d77f117036950276c7bda38dddc33e9d434", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling computer_science_problems_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `fib_m`
[INFO] [stdout]  --> src/fib.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn fib_m(m: &mut HashMap<i64, i64>, n: i64) -> i64 {
[INFO] [stdout]   |    ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fib_mem`
[INFO] [stdout]   --> src/fib.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn fib_mem(n: i64) -> i64 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fib_iter`
[INFO] [stdout]   --> src/fib.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn fib_iter(n: i64) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fib_no_tr`
[INFO] [stdout]   --> src/fib.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn fib_no_tr(n: i64) -> i64 {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `BitPair`
[INFO] [stdout]  --> src/compression.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | type BitPair = (bool, bool);
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress2`
[INFO] [stdout]  --> src/compression.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn compress2(s: String) -> Vec<BitPair> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `decompress`
[INFO] [stdout]   --> src/compression.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn decompress(v: &Vec<BitPair>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `compress`
[INFO] [stdout]   --> src/compression.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub fn compress(s: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `random_key`
[INFO] [stdout]  --> src/encryption.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn random_key(n: u32) -> u32 {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.60s
[INFO] running `Command { std: "docker" "inspect" "0b5537b3685f85519591babb47ab6d77f117036950276c7bda38dddc33e9d434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b5537b3685f85519591babb47ab6d77f117036950276c7bda38dddc33e9d434", kill_on_drop: false }`
[INFO] [stdout] 0b5537b3685f85519591babb47ab6d77f117036950276c7bda38dddc33e9d434
[INFO] running `Command { std: "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfef3e869050beeafb5f580b5f953a94f46190cbca0a7ec3fbf2e9b56bb4bfaa
[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" "cfef3e869050beeafb5f580b5f953a94f46190cbca0a7ec3fbf2e9b56bb4bfaa", kill_on_drop: false }`
[INFO] [stderr]    Compiling computer_science_problems_in_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.53s
[INFO] running `Command { std: "docker" "inspect" "cfef3e869050beeafb5f580b5f953a94f46190cbca0a7ec3fbf2e9b56bb4bfaa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfef3e869050beeafb5f580b5f953a94f46190cbca0a7ec3fbf2e9b56bb4bfaa", kill_on_drop: false }`
[INFO] [stdout] cfef3e869050beeafb5f580b5f953a94f46190cbca0a7ec3fbf2e9b56bb4bfaa
[INFO] running `Command { std: "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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "test" "--frozen", 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] 5db6535e12426ccb071d57603c5e21f1d2156600f7174d86648cf4bd4fd90ffe
[INFO] running `Command { std: "docker" "start" "-a" "5db6535e12426ccb071d57603c5e21f1d2156600f7174d86648cf4bd4fd90ffe", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/computer_science_problems_in_rust-ef2f87c9ea0632e7
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test compression::tests::test_decompress ... ok
[INFO] [stdout] test compression::tests::is_empty ... ok
[INFO] [stdout] test fib::tests::fib1 ... ok
[INFO] [stdout] test fib::tests::fib10 ... ok
[INFO] [stdout] test fib::tests::fib250 ... ok
[INFO] [stdout] test compression::tests::has_a ... ok
[INFO] [stdout] test compression::tests::has_abcd ... ok
[INFO] [stdout] test compression::tests::test_bit ... ok
[INFO] [stdout] test encryption::tests::test_is_random_key_between_range ... ok
[INFO] [stdout] test fib::tests::fib0 ... ok
[INFO] [stdout] test compression::tests::has_c ... ok
[INFO] [stdout] test compression::tests::has_d ... ok
[INFO] [stdout] test compression::tests::has_b ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5db6535e12426ccb071d57603c5e21f1d2156600f7174d86648cf4bd4fd90ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5db6535e12426ccb071d57603c5e21f1d2156600f7174d86648cf4bd4fd90ffe", kill_on_drop: false }`
[INFO] [stdout] 5db6535e12426ccb071d57603c5e21f1d2156600f7174d86648cf4bd4fd90ffe