[INFO] cloning repository https://github.com/Adrodoc/lmu-wise-2020-2021-rust-ue5
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Adrodoc/lmu-wise-2020-2021-rust-ue5" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdrodoc%2Flmu-wise-2020-2021-rust-ue5", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdrodoc%2Flmu-wise-2020-2021-rust-ue5'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df7d98a0c261df7e616c49d432580fd2f24498b0
[INFO] testing Adrodoc/lmu-wise-2020-2021-rust-ue5 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAdrodoc%2Flmu-wise-2020-2021-rust-ue5" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Adrodoc/lmu-wise-2020-2021-rust-ue5 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/Adrodoc/lmu-wise-2020-2021-rust-ue5
[INFO] finished tweaking git repo https://github.com/Adrodoc/lmu-wise-2020-2021-rust-ue5
[INFO] tweaked toml for git repo https://github.com/Adrodoc/lmu-wise-2020-2021-rust-ue5 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Adrodoc/lmu-wise-2020-2021-rust-ue5 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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 241741b97f8b0668a87466f849fc4a4ec5f9c0118b52926f956dad0efbf0a26f
[INFO] running `Command { std: "docker" "start" "-a" "241741b97f8b0668a87466f849fc4a4ec5f9c0118b52926f956dad0efbf0a26f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "241741b97f8b0668a87466f849fc4a4ec5f9c0118b52926f956dad0efbf0a26f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "241741b97f8b0668a87466f849fc4a4ec5f9c0118b52926f956dad0efbf0a26f", kill_on_drop: false }`
[INFO] [stdout] 241741b97f8b0668a87466f849fc4a4ec5f9c0118b52926f956dad0efbf0a26f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 3fb2c51153d97c0c8b00ecce78d0573dbf0d3d4cdef60da99950966ebfd0d535
[INFO] running `Command { std: "docker" "start" "-a" "3fb2c51153d97c0c8b00ecce78d0573dbf0d3d4cdef60da99950966ebfd0d535", kill_on_drop: false }`
[INFO] [stderr]    Compiling ue5 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/main.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::{Debug, Display, Formatter, Result};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `chars`
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn chars(&self) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.19s
[INFO] running `Command { std: "docker" "inspect" "3fb2c51153d97c0c8b00ecce78d0573dbf0d3d4cdef60da99950966ebfd0d535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fb2c51153d97c0c8b00ecce78d0573dbf0d3d4cdef60da99950966ebfd0d535", kill_on_drop: false }`
[INFO] [stdout] 3fb2c51153d97c0c8b00ecce78d0573dbf0d3d4cdef60da99950966ebfd0d535
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] 96030620f7709a0e4acdbead36d28b4354df923fc08387f3ac0b003c11604a44
[INFO] running `Command { std: "docker" "start" "-a" "96030620f7709a0e4acdbead36d28b4354df923fc08387f3ac0b003c11604a44", kill_on_drop: false }`
[INFO] [stderr]    Compiling ue5 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Debug`
[INFO] [stdout]  --> src/main.rs:5:16
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::fmt::{Debug, Display, Formatter, Result};
[INFO] [stdout]   |                ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `chars`
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn chars(&self) -> String {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "96030620f7709a0e4acdbead36d28b4354df923fc08387f3ac0b003c11604a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96030620f7709a0e4acdbead36d28b4354df923fc08387f3ac0b003c11604a44", kill_on_drop: false }`
[INFO] [stdout] 96030620f7709a0e4acdbead36d28b4354df923fc08387f3ac0b003c11604a44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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] dec17fdaa27b76029bc58c7c0525f059442918722f3e2b50bb2064960e2a04bc
[INFO] running `Command { std: "docker" "start" "-a" "dec17fdaa27b76029bc58c7c0525f059442918722f3e2b50bb2064960e2a04bc", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Debug`
[INFO] [stderr]  --> src/main.rs:5:16
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::fmt::{Debug, Display, Formatter, Result};
[INFO] [stderr]   |                ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `chars`
[INFO] [stderr]   --> src/main.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn chars(&self) -> String {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `ue5` (bin "ue5" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ue5-cc86ad8057fbfaf7)
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::frequency_test_chars ... ok
[INFO] [stdout] test tests::frequency_test_numbers ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dec17fdaa27b76029bc58c7c0525f059442918722f3e2b50bb2064960e2a04bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dec17fdaa27b76029bc58c7c0525f059442918722f3e2b50bb2064960e2a04bc", kill_on_drop: false }`
[INFO] [stdout] dec17fdaa27b76029bc58c7c0525f059442918722f3e2b50bb2064960e2a04bc