[INFO] fetching crate purescript_waterslide 0.3.1...
[INFO] testing purescript_waterslide-0.3.1 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate purescript_waterslide 0.3.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate purescript_waterslide 0.3.1 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate purescript_waterslide 0.3.1
[INFO] finished tweaking crates.io crate purescript_waterslide 0.3.1
[INFO] tweaked toml for crates.io crate purescript_waterslide 0.3.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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 uuid v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0e7696f397b38d40725ddfc609a424c0e12f1c702ae1569a744ec903dc60d87
[INFO] running `Command { std: "docker" "start" "-a" "b0e7696f397b38d40725ddfc609a424c0e12f1c702ae1569a744ec903dc60d87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0e7696f397b38d40725ddfc609a424c0e12f1c702ae1569a744ec903dc60d87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0e7696f397b38d40725ddfc609a424c0e12f1c702ae1569a744ec903dc60d87", kill_on_drop: false }`
[INFO] [stdout] b0e7696f397b38d40725ddfc609a424c0e12f1c702ae1569a744ec903dc60d87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bda43195ddee95a979bbdd7fcaf1b476ad8650dc8f919e4004a90d106a6e803a
[INFO] running `Command { std: "docker" "start" "-a" "bda43195ddee95a979bbdd7fcaf1b476ad8650dc8f919e4004a90d106a6e803a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling purescript_waterslide v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: variable does not need to be mutable
[INFO] [stdout]   --> src/purs_module.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |             let mut value = imports.entry(import.clone()).or_insert_with(Vec::new);
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:5:9
[INFO] [stdout]    |
[INFO] [stdout] 5  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `purescript_waterslide` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "bda43195ddee95a979bbdd7fcaf1b476ad8650dc8f919e4004a90d106a6e803a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bda43195ddee95a979bbdd7fcaf1b476ad8650dc8f919e4004a90d106a6e803a", kill_on_drop: false }`
[INFO] [stdout] bda43195ddee95a979bbdd7fcaf1b476ad8650dc8f919e4004a90d106a6e803a