[INFO] cloning repository https://github.com/BekBrace/rust-webass-tax
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BekBrace/rust-webass-tax" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBekBrace%2Frust-webass-tax", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBekBrace%2Frust-webass-tax'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6981b5106f65afae15f1cbb00f36a208d57be1c
[INFO] checking BekBrace/rust-webass-tax against try#3b057e82c7a2874b12909b7e79d444f73535e9e2 for pr-139493-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBekBrace%2Frust-webass-tax" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/BekBrace/rust-webass-tax
[INFO] finished tweaking git repo https://github.com/BekBrace/rust-webass-tax
[INFO] tweaked toml for git repo https://github.com/BekBrace/rust-webass-tax written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/BekBrace/rust-webass-tax on toolchain 3b057e82c7a2874b12909b7e79d444f73535e9e2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3b057e82c7a2874b12909b7e79d444f73535e9e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/BekBrace/rust-webass-tax 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" "+3b057e82c7a2874b12909b7e79d444f73535e9e2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+3b057e82c7a2874b12909b7e79d444f73535e9e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 364db5462481436d871c79f68009ae794277e4cb492d277317c1d1a22698fa2d
[INFO] running `Command { std: "docker" "start" "-a" "364db5462481436d871c79f68009ae794277e4cb492d277317c1d1a22698fa2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "364db5462481436d871c79f68009ae794277e4cb492d277317c1d1a22698fa2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "364db5462481436d871c79f68009ae794277e4cb492d277317c1d1a22698fa2d", kill_on_drop: false }`
[INFO] [stdout] 364db5462481436d871c79f68009ae794277e4cb492d277317c1d1a22698fa2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+3b057e82c7a2874b12909b7e79d444f73535e9e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21cd5fd951466dfd974809e00fc5dfcd0f0683393d3a53b2b2402a0ce732bb3a
[INFO] running `Command { std: "docker" "start" "-a" "21cd5fd951466dfd974809e00fc5dfcd0f0683393d3a53b2b2402a0ce732bb3a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.92
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling wasm-bindgen v0.2.92
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.67
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.92
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.92
[INFO] [stderr]     Checking tax-calculator-wasm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `tax` is never read
[INFO] [stdout]  --> src/lib.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut tax = 0.0;
[INFO] [stdout]   |                   ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tax` is never read
[INFO] [stdout]  --> src/lib.rs:8:19
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut tax = 0.0;
[INFO] [stdout]   |                   ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.81s
[INFO] running `Command { std: "docker" "inspect" "21cd5fd951466dfd974809e00fc5dfcd0f0683393d3a53b2b2402a0ce732bb3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21cd5fd951466dfd974809e00fc5dfcd0f0683393d3a53b2b2402a0ce732bb3a", kill_on_drop: false }`
[INFO] [stdout] 21cd5fd951466dfd974809e00fc5dfcd0f0683393d3a53b2b2402a0ce732bb3a