[INFO] cloning repository https://github.com/Ploppz/experiment [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ploppz/experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPloppz%2Fexperiment", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPloppz%2Fexperiment'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ff9ee74fc6fb5580006b5a0719bb5cc6849c3fd1 [INFO] testing Ploppz/experiment against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPloppz%2Fexperiment" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Ploppz/experiment on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Ploppz/experiment [INFO] removed path dependency plotlib from git repo https://github.com/Ploppz/experiment [INFO] finished tweaking git repo https://github.com/Ploppz/experiment [INFO] tweaked toml for git repo https://github.com/Ploppz/experiment written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/Ploppz/experiment already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: dependency (plotlib) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this [INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag. [INFO] the lockfile is outdated, regenerating it [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: dependency (plotlib) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f1d504783403f63ee4c63c606e2bb887c7b30e21470b13e96bac809a3b46adfe [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "f1d504783403f63ee4c63c606e2bb887c7b30e21470b13e96bac809a3b46adfe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f1d504783403f63ee4c63c606e2bb887c7b30e21470b13e96bac809a3b46adfe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f1d504783403f63ee4c63c606e2bb887c7b30e21470b13e96bac809a3b46adfe", kill_on_drop: false }` [INFO] [stdout] f1d504783403f63ee4c63c606e2bb887c7b30e21470b13e96bac809a3b46adfe [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 12ebe52fe957c4b3178eaf11c4d326bad6cbce66a30576aa94093d812db1abc3 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "12ebe52fe957c4b3178eaf11c4d326bad6cbce66a30576aa94093d812db1abc3", kill_on_drop: false }` [INFO] [stderr] warning: dependency (plotlib) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] [stderr] Compiling proc-macro2 v1.0.19 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.35 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling matrixmultiply v0.1.15 [INFO] [stderr] Compiling serde_derive v1.0.114 [INFO] [stderr] Compiling rawpointer v0.1.0 [INFO] [stderr] Compiling ndarray v0.12.1 [INFO] [stderr] Compiling svg v0.7.2 [INFO] [stderr] Compiling half v1.6.0 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling itertools v0.7.11 [INFO] [stderr] Compiling bincode v1.3.1 [INFO] [stderr] Compiling chrono v0.4.13 [INFO] [stderr] Compiling serde_cbor v0.9.0 [INFO] [stderr] Compiling quote v1.0.7 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling failure v0.1.8 [INFO] [stderr] Compiling plotlib v0.5.1 [INFO] [stderr] Compiling experiment v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Deserialize` [INFO] [stdout] --> src/lib.rs:2:46 [INFO] [stdout] | [INFO] [stdout] 2 | use serde::{Serialize, de::DeserializeOwned, Deserialize}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `bail`, `format_err` [INFO] [stdout] --> src/lib.rs:5:15 [INFO] [stdout] | [INFO] [stdout] 5 | use failure::{bail, format_err}; [INFO] [stdout] | ^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Array1`, `Array2` [INFO] [stdout] --> src/lib.rs:6:15 [INFO] [stdout] | [INFO] [stdout] 6 | use ndarray::{Array1, Array2}; [INFO] [stdout] | ^^^^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `repr`, `style::*`, `view::ContinuousView` [INFO] [stdout] --> src/lib.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | repr, [INFO] [stdout] | ^^^^ [INFO] [stdout] 9 | style::*, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 10 | view::ContinuousView, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `date` [INFO] [stdout] --> src/lib.rs:63:13 [INFO] [stdout] | [INFO] [stdout] 63 | let date = Local::now(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_date` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 32.44s [INFO] running `Command { std: "docker" "inspect" "12ebe52fe957c4b3178eaf11c4d326bad6cbce66a30576aa94093d812db1abc3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "12ebe52fe957c4b3178eaf11c4d326bad6cbce66a30576aa94093d812db1abc3", kill_on_drop: false }` [INFO] [stdout] 12ebe52fe957c4b3178eaf11c4d326bad6cbce66a30576aa94093d812db1abc3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] eebc9dd5dd4477feae670c067fad01e9c1e0fb064ec87b8f7dbe3b5ce7c8542e [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "eebc9dd5dd4477feae670c067fad01e9c1e0fb064ec87b8f7dbe3b5ce7c8542e", kill_on_drop: false }` [INFO] [stderr] warning: dependency (plotlib) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] [stderr] Compiling experiment v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Deserialize` [INFO] [stdout] --> src/lib.rs:2:46 [INFO] [stdout] | [INFO] [stdout] 2 | use serde::{Serialize, de::DeserializeOwned, Deserialize}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `bail`, `format_err` [INFO] [stdout] --> src/lib.rs:5:15 [INFO] [stdout] | [INFO] [stdout] 5 | use failure::{bail, format_err}; [INFO] [stdout] | ^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Array1`, `Array2` [INFO] [stdout] --> src/lib.rs:6:15 [INFO] [stdout] | [INFO] [stdout] 6 | use ndarray::{Array1, Array2}; [INFO] [stdout] | ^^^^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `repr`, `style::*`, `view::ContinuousView` [INFO] [stdout] --> src/lib.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | repr, [INFO] [stdout] | ^^^^ [INFO] [stdout] 9 | style::*, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 10 | view::ContinuousView, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `date` [INFO] [stdout] --> src/lib.rs:63:13 [INFO] [stdout] | [INFO] [stdout] 63 | let date = Local::now(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_date` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Deserialize` [INFO] [stdout] --> src/lib.rs:2:46 [INFO] [stdout] | [INFO] [stdout] 2 | use serde::{Serialize, de::DeserializeOwned, Deserialize}; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `bail`, `format_err` [INFO] [stdout] --> src/lib.rs:5:15 [INFO] [stdout] | [INFO] [stdout] 5 | use failure::{bail, format_err}; [INFO] [stdout] | ^^^^ ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Array1`, `Array2` [INFO] [stdout] --> src/lib.rs:6:15 [INFO] [stdout] | [INFO] [stdout] 6 | use ndarray::{Array1, Array2}; [INFO] [stdout] | ^^^^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `repr`, `style::*`, `view::ContinuousView` [INFO] [stdout] --> src/lib.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | repr, [INFO] [stdout] | ^^^^ [INFO] [stdout] 9 | style::*, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 10 | view::ContinuousView, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `date` [INFO] [stdout] --> src/lib.rs:63:13 [INFO] [stdout] | [INFO] [stdout] 63 | let date = Local::now(); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_date` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.82s [INFO] running `Command { std: "docker" "inspect" "eebc9dd5dd4477feae670c067fad01e9c1e0fb064ec87b8f7dbe3b5ce7c8542e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eebc9dd5dd4477feae670c067fad01e9c1e0fb064ec87b8f7dbe3b5ce7c8542e", kill_on_drop: false }` [INFO] [stdout] eebc9dd5dd4477feae670c067fad01e9c1e0fb064ec87b8f7dbe3b5ce7c8542e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 4052f17d6185dc24fafa1a6b350f117f8e8c69f0222097b895332c81352fe0aa [INFO] running `Command { std: "docker" "start" "-a" "4052f17d6185dc24fafa1a6b350f117f8e8c69f0222097b895332c81352fe0aa", kill_on_drop: false }` [INFO] [stderr] warning: dependency (plotlib) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions [INFO] [stderr] warning: unused import: `Deserialize` [INFO] [stderr] --> src/lib.rs:2:46 [INFO] [stderr] | [INFO] [stderr] 2 | use serde::{Serialize, de::DeserializeOwned, Deserialize}; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `bail`, `format_err` [INFO] [stderr] --> src/lib.rs:5:15 [INFO] [stderr] | [INFO] [stderr] 5 | use failure::{bail, format_err}; [INFO] [stderr] | ^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Array1`, `Array2` [INFO] [stderr] --> src/lib.rs:6:15 [INFO] [stderr] | [INFO] [stderr] 6 | use ndarray::{Array1, Array2}; [INFO] [stderr] | ^^^^^^ ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `repr`, `style::*`, `view::ContinuousView` [INFO] [stderr] --> src/lib.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | repr, [INFO] [stderr] | ^^^^ [INFO] [stderr] 9 | style::*, [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] 10 | view::ContinuousView, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `date` [INFO] [stderr] --> src/lib.rs:63:13 [INFO] [stderr] | [INFO] [stderr] 63 | let date = Local::now(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_date` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `Deserialize` [INFO] [stderr] --> src/lib.rs:2:46 [INFO] [stderr] | [INFO] [stderr] 2 | use serde::{Serialize, de::DeserializeOwned, Deserialize}; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused imports: `bail`, `format_err` [INFO] [stderr] --> src/lib.rs:5:15 [INFO] [stderr] | [INFO] [stderr] 5 | use failure::{bail, format_err}; [INFO] [stderr] | ^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Array1`, `Array2` [INFO] [stderr] --> src/lib.rs:6:15 [INFO] [stderr] | [INFO] [stderr] 6 | use ndarray::{Array1, Array2}; [INFO] [stderr] | ^^^^^^ ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `repr`, `style::*`, `view::ContinuousView` [INFO] [stderr] --> src/lib.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | repr, [INFO] [stderr] | ^^^^ [INFO] [stderr] 9 | style::*, [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] 10 | view::ContinuousView, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `date` [INFO] [stderr] --> src/lib.rs:63:13 [INFO] [stderr] | [INFO] [stderr] 63 | let date = Local::now(); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_date` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 5 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/experiment-05673982af025636 [INFO] [stderr] Doc-tests experiment [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "4052f17d6185dc24fafa1a6b350f117f8e8c69f0222097b895332c81352fe0aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4052f17d6185dc24fafa1a6b350f117f8e8c69f0222097b895332c81352fe0aa", kill_on_drop: false }` [INFO] [stdout] 4052f17d6185dc24fafa1a6b350f117f8e8c69f0222097b895332c81352fe0aa