[INFO] cloning repository https://github.com/nimaaskarian/bingewatcher
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nimaaskarian/bingewatcher" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnimaaskarian%2Fbingewatcher", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnimaaskarian%2Fbingewatcher'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 822b3a232b5e03c32820d2cc1301657761c7f28b
[INFO] building nimaaskarian/bingewatcher against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnimaaskarian%2Fbingewatcher" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/nimaaskarian/bingewatcher
[INFO] finished tweaking git repo https://github.com/nimaaskarian/bingewatcher
[INFO] tweaked toml for git repo https://github.com/nimaaskarian/bingewatcher written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/nimaaskarian/bingewatcher on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/nimaaskarian/bingewatcher 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0eb888e48f01ff544034f19b9e44203e69aa808ea4cd9a2c514d0f805886643f
[INFO] running `Command { std: "docker" "start" "-a" "0eb888e48f01ff544034f19b9e44203e69aa808ea4cd9a2c514d0f805886643f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0eb888e48f01ff544034f19b9e44203e69aa808ea4cd9a2c514d0f805886643f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eb888e48f01ff544034f19b9e44203e69aa808ea4cd9a2c514d0f805886643f", kill_on_drop: false }`
[INFO] [stdout] 0eb888e48f01ff544034f19b9e44203e69aa808ea4cd9a2c514d0f805886643f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bcb24d8eac17db39b24620ed0833ef9ebe82c0aaa4d33622c5f5b5ef27cdb6ac
[INFO] running `Command { std: "docker" "start" "-a" "bcb24d8eac17db39b24620ed0833ef9ebe82c0aaa4d33622c5f5b5ef27cdb6ac", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.75
[INFO] [stderr]    Compiling libc v0.2.169
[INFO] [stderr]    Compiling pkg-config v0.3.28
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling http v1.2.0
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling mio v0.8.10
[INFO] [stderr]    Compiling socket2 v0.5.5
[INFO] [stderr]    Compiling parking_lot_core v0.9.11
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling openssl v0.10.62
[INFO] [stderr]    Compiling indexmap v2.1.0
[INFO] [stderr]    Compiling anstyle v1.0.4
[INFO] [stderr]    Compiling selectors v0.31.0
[INFO] [stderr]    Compiling clap_lex v0.7.1
[INFO] [stderr]    Compiling ryu v1.0.16
[INFO] [stderr]    Compiling servo_arc v0.4.1
[INFO] [stderr]    Compiling sync_wrapper v1.0.2
[INFO] [stderr]    Compiling unicode-width v0.2.1
[INFO] [stderr]    Compiling anstream v0.6.14
[INFO] [stderr]    Compiling serde_json v1.0.117
[INFO] [stderr]    Compiling encoding_rs v0.8.33
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling getopts v0.2.23
[INFO] [stderr]    Compiling parking_lot v0.12.4
[INFO] [stderr]    Compiling clap_builder v4.5.10
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling tokio v1.35.1
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling syn v2.0.47
[INFO] [stderr]    Compiling string_cache_codegen v0.5.4
[INFO] [stderr]    Compiling cc v1.0.83
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[INFO] [stderr]    Compiling openssl-sys v0.9.98
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[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]    Compiling phf_macros v0.11.3
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling cssparser-macros v0.6.1
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[INFO] [stderr]    Compiling clap_derive v4.5.8
[INFO] [stderr]    Compiling match_token v0.35.0
[INFO] [stderr]    Compiling tokio-util v0.7.10
[INFO] [stderr]    Compiling tower v0.5.2
[INFO] [stderr]    Compiling phf v0.11.3
[INFO] [stderr]    Compiling cssparser v0.35.0
[INFO] [stderr]    Compiling h2 v0.4.7
[INFO] [stderr]    Compiling derive_more v2.0.1
[INFO] [stderr]    Compiling clap v4.5.10
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[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling hyper v1.5.2
[INFO] [stderr]    Compiling hyper-util v0.1.10
[INFO] [stderr]    Compiling string_cache v0.8.9
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling hyper-tls v0.6.0
[INFO] [stderr]    Compiling reqwest v0.12.12
[INFO] [stderr]    Compiling markup5ever v0.35.0
[INFO] [stderr]    Compiling html5ever v0.35.0
[INFO] [stderr]    Compiling scraper v0.24.0
[INFO] [stderr]    Compiling bw v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fmt::Display` and `ops::Index`
[INFO] [stdout]  --> src/serie.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fmt::Display, fs::{self, File}, io::{self, Write}, ops::Index, path::{Path, PathBuf}, str::FromStr
[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: `crate::serie::season::Bits`
[INFO] [stdout]   --> src/serie.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::serie::season::Bits;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cli.rs:338:14
[INFO] [stdout]     |
[INFO] [stdout] 338 |         for (mut serie, path) in series {
[INFO] [stdout]     |              ----^^^^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `wikipedia_url_to_bw` is never used
[INFO] [stdout]  --> src/wikipedia.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn wikipedia_url_to_bw(url: String) -> Serie {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cli.rs:251:21
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     old_serie.write(path);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     let _ = old_serie.write(path);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cli.rs:262:21
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     serie.write(path);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     let _ = serie.write(path);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 46.22s
[INFO] running `Command { std: "docker" "inspect" "bcb24d8eac17db39b24620ed0833ef9ebe82c0aaa4d33622c5f5b5ef27cdb6ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcb24d8eac17db39b24620ed0833ef9ebe82c0aaa4d33622c5f5b5ef27cdb6ac", kill_on_drop: false }`
[INFO] [stdout] bcb24d8eac17db39b24620ed0833ef9ebe82c0aaa4d33622c5f5b5ef27cdb6ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0a8c2a6ed6d577b1b9c674ef536cfee0bf7bae332e2ec1ffd122ed8943ded5e
[INFO] running `Command { std: "docker" "start" "-a" "f0a8c2a6ed6d577b1b9c674ef536cfee0bf7bae332e2ec1ffd122ed8943ded5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling half v2.4.1
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling is-terminal v0.4.15
[INFO] [stderr]    Compiling oorandom v11.1.4
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling regex v1.11.1
[INFO] [stderr]    Compiling string_cache v0.8.9
[INFO] [stderr]    Compiling serde_json v1.0.117
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling web_atoms v0.1.3
[INFO] [stderr]    Compiling reqwest v0.12.12
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling markup5ever v0.35.0
[INFO] [stderr]    Compiling html5ever v0.35.0
[INFO] [stderr]    Compiling scraper v0.24.0
[INFO] [stderr]    Compiling bw v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fmt::Display` and `ops::Index`
[INFO] [stdout]  --> src/serie.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fmt::Display, fs::{self, File}, io::{self, Write}, ops::Index, path::{Path, PathBuf}, str::FromStr
[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: `crate::serie::season::Bits`
[INFO] [stdout]   --> src/serie.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::serie::season::Bits;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cli.rs:338:14
[INFO] [stdout]     |
[INFO] [stdout] 338 |         for (mut serie, path) in series {
[INFO] [stdout]     |              ----^^^^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `wikipedia_url_to_bw` is never used
[INFO] [stdout]  --> src/wikipedia.rs:7:4
[INFO] [stdout]   |
[INFO] [stdout] 7 | fn wikipedia_url_to_bw(url: String) -> Serie {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cli.rs:251:21
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     old_serie.write(path);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     let _ = old_serie.write(path);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cli.rs:262:21
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     serie.write(path);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     let _ = serie.write(path);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fmt::Display` and `ops::Index`
[INFO] [stdout]  --> src/serie.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fmt::Display, fs::{self, File}, io::{self, Write}, ops::Index, path::{Path, PathBuf}, str::FromStr
[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: `crate::serie::season::Bits`
[INFO] [stdout]   --> src/serie.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::serie::season::Bits;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cli.rs:338:14
[INFO] [stdout]     |
[INFO] [stdout] 338 |         for (mut serie, path) in series {
[INFO] [stdout]     |              ----^^^^^
[INFO] [stdout]     |              |
[INFO] [stdout]     |              help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cli.rs:251:21
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     old_serie.write(path);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 251 |                     let _ = old_serie.write(path);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/cli.rs:262:21
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     serie.write(path);
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 262 |                     let _ = serie.write(path);
[INFO] [stdout]     |                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 22.84s
[INFO] running `Command { std: "docker" "inspect" "f0a8c2a6ed6d577b1b9c674ef536cfee0bf7bae332e2ec1ffd122ed8943ded5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0a8c2a6ed6d577b1b9c674ef536cfee0bf7bae332e2ec1ffd122ed8943ded5e", kill_on_drop: false }`
[INFO] [stdout] f0a8c2a6ed6d577b1b9c674ef536cfee0bf7bae332e2ec1ffd122ed8943ded5e
