[INFO] cloning repository https://github.com/thomascharbonnel/aaaaaaaaaaaa
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thomascharbonnel/aaaaaaaaaaaa" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomascharbonnel%2Faaaaaaaaaaaa", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomascharbonnel%2Faaaaaaaaaaaa'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a3f90df35e9e0c537a1cc67e483f47b4342c9c0
[INFO] building thomascharbonnel/aaaaaaaaaaaa against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthomascharbonnel%2Faaaaaaaaaaaa" "/workspace/builds/worker-23/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-23/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thomascharbonnel/aaaaaaaaaaaa on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thomascharbonnel/aaaaaaaaaaaa
[INFO] finished tweaking git repo https://github.com/thomascharbonnel/aaaaaaaaaaaa
[INFO] tweaked toml for git repo https://github.com/thomascharbonnel/aaaaaaaaaaaa written to /workspace/builds/worker-23/source/Cargo.toml
[INFO] crate git repo https://github.com/thomascharbonnel/aaaaaaaaaaaa already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e68cb0168d0301f3d21391026f5bff4a7bb1ee57fc1282d8118335a5f31064a
[INFO] running `Command { std: "docker" "start" "-a" "3e68cb0168d0301f3d21391026f5bff4a7bb1ee57fc1282d8118335a5f31064a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e68cb0168d0301f3d21391026f5bff4a7bb1ee57fc1282d8118335a5f31064a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e68cb0168d0301f3d21391026f5bff4a7bb1ee57fc1282d8118335a5f31064a", kill_on_drop: false }`
[INFO] [stdout] 3e68cb0168d0301f3d21391026f5bff4a7bb1ee57fc1282d8118335a5f31064a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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=forbid" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d7463a85bb26424be0bd9b96ebae90e5616e875eb1bca436b683528c7e73b76
[INFO] running `Command { std: "docker" "start" "-a" "0d7463a85bb26424be0bd9b96ebae90e5616e875eb1bca436b683528c7e73b76", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling log v0.4.14
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[INFO] [stderr]    Compiling memchr v2.4.0
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[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling bytes v1.0.1
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[INFO] [stderr]    Compiling itoa v0.4.7
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[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
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[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling httparse v1.4.1
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[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling futures-channel v0.3.15
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[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling openssl-probe v0.1.4
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling try-lock v0.2.3
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling tower-service v0.3.1
[INFO] [stderr]    Compiling httpdate v1.0.1
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]    Compiling mime v0.3.16
[INFO] [stderr]    Compiling base64 v0.13.0
[INFO] [stderr]    Compiling ipnet v2.3.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.5
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling tinyvec v1.2.0
[INFO] [stderr]    Compiling form_urlencoded v1.0.1
[INFO] [stderr]    Compiling tokio v1.8.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling unicode-normalization v0.1.19
[INFO] [stderr]    Compiling http v0.2.4
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling mio v0.7.13
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling http-body v0.4.2
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling tokio-util v0.6.7
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling h2 v0.3.3
[INFO] [stderr]    Compiling hyper v0.14.10
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.4
[INFO] [stderr]    Compiling rust_training v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level5.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level4.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level6.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level7.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level8.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `duration`
[INFO] [stdout]  --> src/bin/level4.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     duration: Duration,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Stats` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/bin/level4.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `number_of_bytes`
[INFO] [stdout]  --> src/bin/level4.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     number_of_bytes: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Stats` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/bin/level4.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `aggregate`
[INFO] [stdout]   --> src/bin/level4.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn aggregate(&mut self, other: &Stats) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bytes_per_sec`
[INFO] [stdout]   --> src/bin/level4.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn bytes_per_sec(&self) -> Option<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `initialStat` should have a snake case name
[INFO] [stdout]   --> src/bin/level5.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let initialStat = Stats { duration: Duration::new(0, 0), number_of_bytes: 0 };
[INFO] [stdout]    |         ^^^^^^^^^^^ help: convert the identifier to snake case: `initial_stat`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/level8.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         thread.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 41s
[INFO] running `Command { std: "docker" "inspect" "0d7463a85bb26424be0bd9b96ebae90e5616e875eb1bca436b683528c7e73b76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d7463a85bb26424be0bd9b96ebae90e5616e875eb1bca436b683528c7e73b76", kill_on_drop: false }`
[INFO] [stdout] 0d7463a85bb26424be0bd9b96ebae90e5616e875eb1bca436b683528c7e73b76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-23/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=forbid" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 228f8d77845459df18ef0196718ec947787c30a33100a1b60ea81a7dc8f4f2fc
[INFO] running `Command { std: "docker" "start" "-a" "228f8d77845459df18ef0196718ec947787c30a33100a1b60ea81a7dc8f4f2fc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_training v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level5.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level6.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level7.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level4.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `reqwest::StatusCode`
[INFO] [stdout]  --> src/bin/level8.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use reqwest::StatusCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `initialStat` should have a snake case name
[INFO] [stdout]   --> src/bin/level5.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let initialStat = Stats { duration: Duration::new(0, 0), number_of_bytes: 0 };
[INFO] [stdout]    |         ^^^^^^^^^^^ help: convert the identifier to snake case: `initial_stat`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `duration`
[INFO] [stdout]  --> src/bin/level4.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     duration: Duration,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Stats` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/bin/level4.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `number_of_bytes`
[INFO] [stdout]  --> src/bin/level4.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     number_of_bytes: usize,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Stats` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/bin/level4.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[derive(Debug)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `aggregate`
[INFO] [stdout]   --> src/bin/level4.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn aggregate(&mut self, other: &Stats) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bytes_per_sec`
[INFO] [stdout]   --> src/bin/level4.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn bytes_per_sec(&self) -> Option<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bin/level8.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         thread.join();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.18s
[INFO] [stderr]   Executable unittests src/bin/level0.rs (/opt/rustwide/target/debug/deps/level0-1f0a66a42c6ed681)
[INFO] [stderr]   Executable unittests src/bin/level1.rs (/opt/rustwide/target/debug/deps/level1-e481f05377d86b2b)
[INFO] [stderr]   Executable unittests src/bin/level2.rs (/opt/rustwide/target/debug/deps/level2-e7469da834a8a7fc)
[INFO] [stderr]   Executable unittests src/bin/level3.rs (/opt/rustwide/target/debug/deps/level3-365fbb18b6704b72)
[INFO] [stderr]   Executable unittests src/bin/level4.rs (/opt/rustwide/target/debug/deps/level4-7ec41c84c906f440)
[INFO] [stderr]   Executable unittests src/bin/level5.rs (/opt/rustwide/target/debug/deps/level5-b3f307da99f06171)
[INFO] [stderr]   Executable unittests src/bin/level6.rs (/opt/rustwide/target/debug/deps/level6-2542e3f46428eeca)
[INFO] [stderr]   Executable unittests src/bin/level7.rs (/opt/rustwide/target/debug/deps/level7-c0445a53c63a9d19)
[INFO] [stderr]   Executable unittests src/bin/level8.rs (/opt/rustwide/target/debug/deps/level8-580f9e10b477b0d5)
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_training-8f94e1ec054ca682)
[INFO] running `Command { std: "docker" "inspect" "228f8d77845459df18ef0196718ec947787c30a33100a1b60ea81a7dc8f4f2fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "228f8d77845459df18ef0196718ec947787c30a33100a1b60ea81a7dc8f4f2fc", kill_on_drop: false }`
[INFO] [stdout] 228f8d77845459df18ef0196718ec947787c30a33100a1b60ea81a7dc8f4f2fc