[INFO] cloning repository https://github.com/Farbdose1231/PETChallenges
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Farbdose1231/PETChallenges" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFarbdose1231%2FPETChallenges", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFarbdose1231%2FPETChallenges'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 011b81968a514f0fc213baacc0317f031377ccd7
[INFO] testing Farbdose1231/PETChallenges against beta-2026-01-20 for beta-1.94-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFarbdose1231%2FPETChallenges" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Farbdose1231/PETChallenges
[INFO] finished tweaking git repo https://github.com/Farbdose1231/PETChallenges
[INFO] tweaked toml for git repo https://github.com/Farbdose1231/PETChallenges written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Farbdose1231/PETChallenges on toolchain beta-2026-01-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Farbdose1231/PETChallenges already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-01-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 884387963b76ab0096988d03af74432ada055d6d68408b170add5dbcf01ec270
[INFO] running `Command { std: "docker" "start" "-a" "884387963b76ab0096988d03af74432ada055d6d68408b170add5dbcf01ec270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "884387963b76ab0096988d03af74432ada055d6d68408b170add5dbcf01ec270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "884387963b76ab0096988d03af74432ada055d6d68408b170add5dbcf01ec270", kill_on_drop: false }`
[INFO] [stdout] 884387963b76ab0096988d03af74432ada055d6d68408b170add5dbcf01ec270
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 209bfe02883c99138bc94b2e6234c5d379ff6a1cc54bb2ff3ee273c03c5d9a4d
[INFO] running `Command { std: "docker" "start" "-a" "209bfe02883c99138bc94b2e6234c5d379ff6a1cc54bb2ff3ee273c03c5d9a4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling proc-macro2 v1.0.88
[INFO] [stderr]    Compiling serde v1.0.211
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]    Compiling zeroize v1.8.1
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]    Compiling inout v0.1.3
[INFO] [stderr]    Compiling rustc_version v0.4.1
[INFO] [stderr]    Compiling curve25519-dalek v4.1.3
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.82
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling universal-hash v0.5.1
[INFO] [stderr]    Compiling cipher v0.4.4
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling aead v0.5.2
[INFO] [stderr]    Compiling polyval v0.6.2
[INFO] [stderr]    Compiling aes v0.8.4
[INFO] [stderr]    Compiling ctr v0.9.2
[INFO] [stderr]    Compiling ghash v0.5.1
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling aes-gcm v0.10.3
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.211
[INFO] [stderr]    Compiling curve25519-dalek-derive v0.1.1
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling Exercise2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/aes.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `aead::generic_array::GenericArray`
[INFO] [stdout]  --> src/aes.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use aead::generic_array::GenericArray;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]   --> src/aes.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 | use rand::{rngs::OsRng, Rng};
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/keys.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/aes.rs:47:77
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let cipher_text = cipher.encrypt(&nonce, message.as_ref()).map_err(|e| format!("Encryption failure"));
[INFO] [stdout]    |                                                                             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/aes.rs:45:68
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let cipher= Aes256Gcm::new_from_slice(&key_bytes).map_err(|e| "Invalid key length")?;
[INFO] [stdout]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `AES_KEY_SIZE` is never used
[INFO] [stdout]   --> src/aes.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | const AES_KEY_SIZE: usize = 32; // AES-256 requires a 256-bit key (32 bytes)
[INFO] [stdout]    |       ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `keygen`, `scalar_to_aes_key`, `encrypt`, and `decrypt` are never used
[INFO] [stdout]   --> src/aes.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl AESCiphertext {
[INFO] [stdout]    | ------------------ associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn keygen() -> Scalar {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn scalar_to_aes_key(scalar: &Scalar) -> [u8; AES_KEY_SIZE] {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn encrypt(scalar_key: &Scalar, message: &[u8]) -> Result<AESCiphertext, String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn decrypt(scalar_key: &Scalar, aes_ciphertext: &AESCiphertext) -> Result<Vec<u8>, String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ElGamalCiphertext` is never constructed
[INFO] [stdout]   --> src/elgamal.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct ElGamalCiphertext {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `keygen`, `encrypt`, and `decrypt` are never used
[INFO] [stdout]   --> src/elgamal.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl ElGamalCiphertext {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 18 |     /// Generates a new KeyPair for encryption
[INFO] [stdout] 19 |     pub fn keygen() -> KeyPair {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn encrypt(message: &Scalar, public_key: &RistrettoPoint) -> ElGamalCiphertext {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 40 |     pub fn decrypt(&self, private_key: &Scalar) -> Scalar {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KeyPair` is never constructed
[INFO] [stdout]   --> src/keys.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct KeyPair {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `generate`, `write_sk_to_file`, `write_pk_to_file`, `from_file`, and `pk_from_file` are never used
[INFO] [stdout]   --> src/keys.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl KeyPair {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 19 |     /// Generate a Schnorr signature key pair
[INFO] [stdout] 20 |     pub fn generate() -> KeyPair {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 33 |     pub fn write_sk_to_file(&self, path: &str) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn write_pk_to_file(&self, path: &str) -> io::Result<()> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     pub fn from_file(path: &str) -> io::Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 81 |     pub fn pk_from_file(path: &str) -> io::Result<RistrettoPoint> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.78s
[INFO] running `Command { std: "docker" "inspect" "209bfe02883c99138bc94b2e6234c5d379ff6a1cc54bb2ff3ee273c03c5d9a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "209bfe02883c99138bc94b2e6234c5d379ff6a1cc54bb2ff3ee273c03c5d9a4d", kill_on_drop: false }`
[INFO] [stdout] 209bfe02883c99138bc94b2e6234c5d379ff6a1cc54bb2ff3ee273c03c5d9a4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c01006549c061ac7f04998fa777ae9e54f10ffb178ca55cc4e1123df656e4a11
[INFO] running `Command { std: "docker" "start" "-a" "c01006549c061ac7f04998fa777ae9e54f10ffb178ca55cc4e1123df656e4a11", kill_on_drop: false }`
[INFO] [stderr]    Compiling Exercise2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt::format`
[INFO] [stdout]  --> src/aes.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::format;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `aead::generic_array::GenericArray`
[INFO] [stdout]  --> src/aes.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use aead::generic_array::GenericArray;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]   --> src/aes.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 | use rand::{rngs::OsRng, Rng};
[INFO] [stdout]    |                         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::Rng`
[INFO] [stdout]  --> src/keys.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use rand::Rng;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/aes.rs:47:77
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let cipher_text = cipher.encrypt(&nonce, message.as_ref()).map_err(|e| format!("Encryption failure"));
[INFO] [stdout]    |                                                                             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/aes.rs:45:68
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let cipher= Aes256Gcm::new_from_slice(&key_bytes).map_err(|e| "Invalid key length")?;
[INFO] [stdout]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "c01006549c061ac7f04998fa777ae9e54f10ffb178ca55cc4e1123df656e4a11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c01006549c061ac7f04998fa777ae9e54f10ffb178ca55cc4e1123df656e4a11", kill_on_drop: false }`
[INFO] [stdout] c01006549c061ac7f04998fa777ae9e54f10ffb178ca55cc4e1123df656e4a11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-01-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5941bd04c061340709db86781374a40c6d3a0e1c1e54a6fdbfe19e967fd761a7
[INFO] running `Command { std: "docker" "start" "-a" "5941bd04c061340709db86781374a40c6d3a0e1c1e54a6fdbfe19e967fd761a7", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::fmt::format`
[INFO] [stderr]  --> src/aes.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fmt::format;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `aead::generic_array::GenericArray`
[INFO] [stderr]  --> src/aes.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use aead::generic_array::GenericArray;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]   --> src/aes.rs:12:25
[INFO] [stderr]    |
[INFO] [stderr] 12 | use rand::{rngs::OsRng, Rng};
[INFO] [stderr]    |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/keys.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/aes.rs:47:77
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let cipher_text = cipher.encrypt(&nonce, message.as_ref()).map_err(|e| format!("Encryption failure"));
[INFO] [stderr]    |                                                                             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/aes.rs:45:68
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let cipher= Aes256Gcm::new_from_slice(&key_bytes).map_err(|e| "Invalid key length")?;
[INFO] [stderr]    |                                                                    ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: `Exercise2` (bin "Exercise2" test) generated 6 warnings (run `cargo fix --bin "Exercise2" -p Exercise2 --tests` to apply 6 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/Exercise2-45514ae9f136c3ee)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test aes::tests::test_aes_correctness ... ok
[INFO] [stdout] test elgamal::tests::test_elgamal_encrypt_zero_scalar ... ok
[INFO] [stdout] test elgamal::tests::test_elgamal_repeated_encryption_produces_different_ciphertexts ... ok
[INFO] [stdout] test keys::tests::test_generate_keypair ... ok
[INFO] [stdout] test keys::tests::test_write_and_read_keypair ... FAILED
[INFO] [stdout] test elgamal::tests::test_elgamal_different_keys ... ok
[INFO] [stdout] test elgamal::tests::test_elgamal_encrypt_small_scalar ... ok
[INFO] [stdout] test elgamal::tests::test_elgamal_correctness ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- keys::tests::test_write_and_read_keypair stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'keys::tests::test_write_and_read_keypair' (32) panicked at src/keys.rs:136:14:
[INFO] [stdout] Failed to write sk to file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x62d29fb1eba2 - std::backtrace_rs::backtrace::libunwind::trace::hf0bd46b30bc61685
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x62d29fb1eba2 - std::backtrace_rs::backtrace::trace_unsynchronized::h1d1fbb72ad89d7b7
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x62d29fb1eba2 - std::sys::backtrace::_print_fmt::he38b6f68ca847f47
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x62d29fb1eba2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb7e843cde1bc81a3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x62d29fb2ec6a - core::fmt::rt::Argument::fmt::hc1dd77ac64f2688c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x62d29fb2ec6a - core::fmt::write::h952c506e2dbe9cff
[INFO] [stdout]    6:     0x62d29faed976 - std::io::default_write_fmt::hd23bd8145c03a23a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x62d29faed976 - std::io::Write::write_fmt::hdd3314a2bd8a34bd
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x62d29fafe039 - std::sys::backtrace::BacktraceLock::print::h1079b82381c2c252
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x62d29fafe039 - std::panicking::default_hook::{{closure}}::h85cb76b8462c00f2
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x62d29fafded1 - std::panicking::default_hook::h0134d220cc034c02
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x62d29fa66c3e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hb2e68dca3970e3ca
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x62d29fa66c3e - test::test_main_with_exit_callback::{{closure}}::ha7ec2063a2565ec3
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x62d29fafe2b2 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::haebee478d0f56cf4
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x62d29fafe2b2 - std::panicking::panic_with_hook::h8119b6db1fef734f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x62d29fafe0f8 - std::panicking::panic_handler::{{closure}}::h24f5360b91482c0e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x62d29faf9689 - std::sys::backtrace::__rust_end_short_backtrace::h4e60c5cbd1bd0108
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x62d29fae256d - __rustc[e4c6931bd8050421]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x62d29fb360bc - core::panicking::panic_fmt::hb1614a3ff6840071
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x62d29fb358d2 - core::result::unwrap_failed::h7d4c34940aded59c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1867:5
[INFO] [stdout]   20:     0x62d29fa43ffc - core::result::Result<T,E>::expect::h22a69b90e0536bef
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/result.rs:1185:23
[INFO] [stdout]   21:     0x62d29fa402fc - Exercise2::keys::tests::test_write_and_read_keypair::h0cb61eb959eef5f5
[INFO] [stdout]                                at /opt/rustwide/workdir/src/keys.rs:136:14
[INFO] [stdout]   22:     0x62d29fa40587 - Exercise2::keys::tests::test_write_and_read_keypair::{{closure}}::h77c827d98b39008d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/keys.rs:128:37
[INFO] [stdout]   23:     0x62d29fa3ebe6 - core::ops::function::FnOnce::call_once::hd4ba4f7baa77bcb5
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x62d29fa66a3b - core::ops::function::FnOnce::call_once::hefaf63600cd43d2a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x62d29fa66a3b - test::__rust_begin_short_backtrace::he30322a73a0e9ea6
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x62d29fa7a40a - test::run_test_in_process::{{closure}}::hdea3ab8d0243ef36
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x62d29fa7a40a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h66d192f42498ffce
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x62d29fa7a40a - std::panicking::catch_unwind::do_call::h822e18e8d3a6bb65
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x62d29fa7a40a - std::panicking::catch_unwind::h54b1de7ceab578bf
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x62d29fa7a40a - std::panic::catch_unwind::h60c29b7a9d0246b1
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x62d29fa7a40a - test::run_test_in_process::h6099b5f871379b13
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x62d29fa7a40a - test::run_test::{{closure}}::h926ce0a38281a4c8
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x62d29fa54864 - test::run_test::{{closure}}::h508de21a9afc7140
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x62d29fa54864 - std::sys::backtrace::__rust_begin_short_backtrace::h6e2f5c39ca00735a
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x62d29fa58122 - std::thread::lifecycle::spawn_unchecked::{{closure}}::{{closure}}::h133e44f0e5802c14
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   36:     0x62d29fa58122 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4718c1285283955c
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x62d29fa58122 - std::panicking::catch_unwind::do_call::h0bba3937b4892238
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:581:40
[INFO] [stdout]   38:     0x62d29fa58122 - std::panicking::catch_unwind::h5b31cab5fb8c5d7f
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panicking.rs:544:19
[INFO] [stdout]   39:     0x62d29fa58122 - std::panic::catch_unwind::hb2fa05d52ed0124e
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x62d29fa58122 - std::thread::lifecycle::spawn_unchecked::{{closure}}::hf401cf5ff501bd29
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   41:     0x62d29fa58122 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h160022e94ce3b0bb
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x62d29faf486f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hf234e0d1d1d272ba
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   43:     0x62d29faf486f - std::sys::thread::unix::Thread::new::thread_start::h106a295241840d3b
[INFO] [stdout]                                at /rustc/9b1f8ff42d110b0ca138116745be921df5dc97e7/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x737cb0516aa4 - <unknown>
[INFO] [stdout]   45:     0x737cb05a3a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     keys::tests::test_write_and_read_keypair
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 7 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin Exercise2`
[INFO] running `Command { std: "docker" "inspect" "5941bd04c061340709db86781374a40c6d3a0e1c1e54a6fdbfe19e967fd761a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5941bd04c061340709db86781374a40c6d3a0e1c1e54a6fdbfe19e967fd761a7", kill_on_drop: false }`
[INFO] [stdout] 5941bd04c061340709db86781374a40c6d3a0e1c1e54a6fdbfe19e967fd761a7
