[INFO] cloning repository https://github.com/CGMossa/univariate_optimisation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CGMossa/univariate_optimisation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCGMossa%2Funivariate_optimisation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCGMossa%2Funivariate_optimisation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8673cf71137cf491e72b5d7b9dd44589f39dfe83
[INFO] building CGMossa/univariate_optimisation against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCGMossa%2Funivariate_optimisation" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CGMossa/univariate_optimisation on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CGMossa/univariate_optimisation
[INFO] finished tweaking git repo https://github.com/CGMossa/univariate_optimisation
[INFO] tweaked toml for git repo https://github.com/CGMossa/univariate_optimisation written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CGMossa/univariate_optimisation 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded c2-chacha v0.2.2
[INFO] [stderr]   Downloaded getrandom v0.1.12
[INFO] [stderr]   Downloaded num v0.2.0
[INFO] [stderr]   Downloaded num-rational v0.2.2
[INFO] [stderr]   Downloaded wasi v0.7.0
[INFO] [stderr]   Downloaded num-complex v0.2.3
[INFO] [stderr]   Downloaded autocfg v0.1.6
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.5
[INFO] [stderr]   Downloaded num-bigint v0.2.3
[INFO] [stderr]   Downloaded rand v0.7.2
[INFO] [stderr]   Downloaded num-iter v0.1.39
[INFO] [stderr]   Downloaded num-integer v0.1.41
[INFO] [stderr]   Downloaded libc v0.2.62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a0b1221b595bb822cac62108ffd643f668c65c8f7063e5c747b575d29b8da5c
[INFO] running `Command { std: "docker" "start" "-a" "7a0b1221b595bb822cac62108ffd643f668c65c8f7063e5c747b575d29b8da5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a0b1221b595bb822cac62108ffd643f668c65c8f7063e5c747b575d29b8da5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a0b1221b595bb822cac62108ffd643f668c65c8f7063e5c747b575d29b8da5c", kill_on_drop: false }`
[INFO] [stdout] 7a0b1221b595bb822cac62108ffd643f668c65c8f7063e5c747b575d29b8da5c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35d1cfabff7b79f134fbdf78b5ac601721b5d32299d1b93971483395db6fbabf
[INFO] running `Command { std: "docker" "start" "-a" "35d1cfabff7b79f134fbdf78b5ac601721b5d32299d1b93971483395db6fbabf", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.12
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling c2-chacha v0.2.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling univariate_optimisation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `objective`
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let objective = |x: f64| x.ln() / (1f64 + x);
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_objective`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diff_objective`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let diff_objective = |x: f64| (1f64 + 1f64 / x - x.ln()) / ((1f64 + x).powi(2));
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_diff_objective`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_value`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let start_value: f64;
[INFO] [stdout]   |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let a = domain.start;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let b = domain.end;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `objective`
[INFO] [stdout]   --> src/main.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn bisection_method<T, F1, F2>(objective: F1, diff_objective: F2, domain: Range<T>)
[INFO] [stdout]    |                                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_objective`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diff_objective`
[INFO] [stdout]   --> src/main.rs:12:47
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn bisection_method<T, F1, F2>(objective: F1, diff_objective: F2, domain: Range<T>)
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_diff_objective`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bisection_method` is never used
[INFO] [stdout]   --> src/main.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn bisection_method<T, F1, F2>(objective: F1, diff_objective: F2, domain: Range<T>)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.67s
[INFO] running `Command { std: "docker" "inspect" "35d1cfabff7b79f134fbdf78b5ac601721b5d32299d1b93971483395db6fbabf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35d1cfabff7b79f134fbdf78b5ac601721b5d32299d1b93971483395db6fbabf", kill_on_drop: false }`
[INFO] [stdout] 35d1cfabff7b79f134fbdf78b5ac601721b5d32299d1b93971483395db6fbabf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 33c51b2e4011e4d1057d277aabbf8be86c579a12e4f51f52ba71abda52000d3d
[INFO] running `Command { std: "docker" "start" "-a" "33c51b2e4011e4d1057d277aabbf8be86c579a12e4f51f52ba71abda52000d3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling univariate_optimisation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `objective`
[INFO] [stdout]  --> src/main.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let objective = |x: f64| x.ln() / (1f64 + x);
[INFO] [stdout]   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_objective`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diff_objective`
[INFO] [stdout]  --> src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let diff_objective = |x: f64| (1f64 + 1f64 / x - x.ln()) / ((1f64 + x).powi(2));
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_diff_objective`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start_value`
[INFO] [stdout]  --> src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let start_value: f64;
[INFO] [stdout]   |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_start_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let a = domain.start;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let b = domain.end;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `objective`
[INFO] [stdout]   --> src/main.rs:12:32
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn bisection_method<T, F1, F2>(objective: F1, diff_objective: F2, domain: Range<T>)
[INFO] [stdout]    |                                ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_objective`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `diff_objective`
[INFO] [stdout]   --> src/main.rs:12:47
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn bisection_method<T, F1, F2>(objective: F1, diff_objective: F2, domain: Range<T>)
[INFO] [stdout]    |                                               ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_diff_objective`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "33c51b2e4011e4d1057d277aabbf8be86c579a12e4f51f52ba71abda52000d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33c51b2e4011e4d1057d277aabbf8be86c579a12e4f51f52ba71abda52000d3d", kill_on_drop: false }`
[INFO] [stdout] 33c51b2e4011e4d1057d277aabbf8be86c579a12e4f51f52ba71abda52000d3d
