[INFO] cloning repository https://github.com/cpdean/gzip_simulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cpdean/gzip_simulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcpdean%2Fgzip_simulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcpdean%2Fgzip_simulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 64e3baccf0f914fee4175e0494e83af83e218a6c
[INFO] testing cpdean/gzip_simulator against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcpdean%2Fgzip_simulator" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cpdean/gzip_simulator on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cpdean/gzip_simulator
[INFO] finished tweaking git repo https://github.com/cpdean/gzip_simulator
[INFO] tweaked toml for git repo https://github.com/cpdean/gzip_simulator written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/cpdean/gzip_simulator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5739286d3134a5a9c77881ec04d630d21dd6471317a9ecd6de9583d243b6c15e
[INFO] running `Command { std: "docker" "start" "-a" "5739286d3134a5a9c77881ec04d630d21dd6471317a9ecd6de9583d243b6c15e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5739286d3134a5a9c77881ec04d630d21dd6471317a9ecd6de9583d243b6c15e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5739286d3134a5a9c77881ec04d630d21dd6471317a9ecd6de9583d243b6c15e", kill_on_drop: false }`
[INFO] [stdout] 5739286d3134a5a9c77881ec04d630d21dd6471317a9ecd6de9583d243b6c15e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e89938cd08915e2d1a37166cf6b1ae64de59f2f65d22c618593a2aba8e0f7be7
[INFO] running `Command { std: "docker" "start" "-a" "e89938cd08915e2d1a37166cf6b1ae64de59f2f65d22c618593a2aba8e0f7be7", kill_on_drop: false }`
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling gunzip_simulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:13:40
[INFO] [stdout]    |
[INFO] [stdout] 13 | type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stdout]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     break;
[INFO] [stdout]     |                     ----- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 139 |                 in_match = false;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_byte_to_find` is never read
[INFO] [stdout]   --> src/main.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut current_byte_to_find = bytes[read_position];
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/main.rs:168:12
[INFO] [stdout]     |
[INFO] [stdout] 168 |     pub fn get(&self, index: usize) -> Option<Vec<u8>> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `Command { std: "docker" "inspect" "e89938cd08915e2d1a37166cf6b1ae64de59f2f65d22c618593a2aba8e0f7be7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e89938cd08915e2d1a37166cf6b1ae64de59f2f65d22c618593a2aba8e0f7be7", kill_on_drop: false }`
[INFO] [stdout] e89938cd08915e2d1a37166cf6b1ae64de59f2f65d22c618593a2aba8e0f7be7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c3a5e2ca3d250ef2ff2b9252ad4a3ec79ce94eef952e775bf631f6e78763137
[INFO] running `Command { std: "docker" "start" "-a" "2c3a5e2ca3d250ef2ff2b9252ad4a3ec79ce94eef952e775bf631f6e78763137", kill_on_drop: false }`
[INFO] [stderr]    Compiling gunzip_simulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:13:40
[INFO] [stdout]    |
[INFO] [stdout] 13 | type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stdout]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GzipComponent::*`
[INFO] [stdout]    --> src/main.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |         use GzipComponent::*;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/main.rs:139:17
[INFO] [stdout]     |
[INFO] [stdout] 129 |                     break;
[INFO] [stdout]     |                     ----- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 139 |                 in_match = false;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `current_byte_to_find` is never read
[INFO] [stdout]   --> src/main.rs:52:17
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let mut current_byte_to_find = bytes[read_position];
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]    --> src/main.rs:168:12
[INFO] [stdout]     |
[INFO] [stdout] 168 |     pub fn get(&self, index: usize) -> Option<Vec<u8>> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_printing`
[INFO] [stdout]    --> src/main.rs:225:8
[INFO] [stdout]     |
[INFO] [stdout] 225 |     fn test_printing() -> Result<()> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_byte_getter`
[INFO] [stdout]    --> src/main.rs:334:8
[INFO] [stdout]     |
[INFO] [stdout] 334 |     fn test_byte_getter() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "2c3a5e2ca3d250ef2ff2b9252ad4a3ec79ce94eef952e775bf631f6e78763137", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c3a5e2ca3d250ef2ff2b9252ad4a3ec79ce94eef952e775bf631f6e78763137", kill_on_drop: false }`
[INFO] [stdout] 2c3a5e2ca3d250ef2ff2b9252ad4a3ec79ce94eef952e775bf631f6e78763137
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 00f4a2f593c7443f05905a0b0344c0febc3bac6cfdd4aed9fc9a0c259a3953b3
[INFO] running `Command { std: "docker" "start" "-a" "00f4a2f593c7443f05905a0b0344c0febc3bac6cfdd4aed9fc9a0c259a3953b3", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:13:40
[INFO] [stderr]    |
[INFO] [stderr] 13 | type Result<T> = result::Result<T, Box<Error>>;
[INFO] [stderr]    |                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GzipComponent::*`
[INFO] [stderr]    --> src/main.rs:242:13
[INFO] [stderr]     |
[INFO] [stderr] 242 |         use GzipComponent::*;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/main.rs:139:17
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     break;
[INFO] [stderr]     |                     ----- any code following this expression is unreachable
[INFO] [stderr] ...
[INFO] [stderr] 139 |                 in_match = false;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `current_byte_to_find` is never read
[INFO] [stderr]   --> src/main.rs:52:17
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let mut current_byte_to_find = bytes[read_position];
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]    --> src/main.rs:168:12
[INFO] [stderr]     |
[INFO] [stderr] 168 |     pub fn get(&self, index: usize) -> Option<Vec<u8>> {
[INFO] [stderr]     |            ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_printing`
[INFO] [stderr]    --> src/main.rs:225:8
[INFO] [stderr]     |
[INFO] [stderr] 225 |     fn test_printing() -> Result<()> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_byte_getter`
[INFO] [stderr]    --> src/main.rs:334:8
[INFO] [stderr]     |
[INFO] [stderr] 334 |     fn test_byte_getter() {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `gunzip_simulator` (bin "gunzip_simulator" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gunzip_simulator-a0d6db78f1ed2463)
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::test_bigger_compression_with_repeat_and_a_break ... ok
[INFO] [stdout] test tests::test_simple_repettition ... ok
[INFO] [stdout] test tests::test_no_compression ... ok
[INFO] [stdout] test tests::test_bigger_compression ... ok
[INFO] [stdout] test tests::test_bigger_compression_with_repeat ... ok
[INFO] [stdout] test tests::test_simple_repettition2 ... ok
[INFO] [stdout] test tests::test_empty ... ok
[INFO] [stdout] test tests::test_some_compression ... ok
[INFO] [stdout] test tests::test_simple_writing ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "00f4a2f593c7443f05905a0b0344c0febc3bac6cfdd4aed9fc9a0c259a3953b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00f4a2f593c7443f05905a0b0344c0febc3bac6cfdd4aed9fc9a0c259a3953b3", kill_on_drop: false }`
[INFO] [stdout] 00f4a2f593c7443f05905a0b0344c0febc3bac6cfdd4aed9fc9a0c259a3953b3