[INFO] cloning repository https://github.com/steffenhaug/plox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/steffenhaug/plox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Fplox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Fplox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 29c0dbd8c4f324d814d3f6ffe31d3278e5206dd2
[INFO] testing steffenhaug/plox/29c0dbd8c4f324d814d3f6ffe31d3278e5206dd2 against master#414482f6a0d4e7290f614300581a0b55442552a3 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsteffenhaug%2Fplox" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/steffenhaug/plox on toolchain 414482f6a0d4e7290f614300581a0b55442552a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/steffenhaug/plox
[INFO] finished tweaking git repo https://github.com/steffenhaug/plox
[INFO] tweaked toml for git repo https://github.com/steffenhaug/plox written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/steffenhaug/plox 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" "+414482f6a0d4e7290f614300581a0b55442552a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c41ee1d00885ea642ac5ada99fdbdb5d4106c2424fb530e9ce3b4786ea3fde10
[INFO] running `Command { std: "docker" "start" "-a" "c41ee1d00885ea642ac5ada99fdbdb5d4106c2424fb530e9ce3b4786ea3fde10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c41ee1d00885ea642ac5ada99fdbdb5d4106c2424fb530e9ce3b4786ea3fde10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c41ee1d00885ea642ac5ada99fdbdb5d4106c2424fb530e9ce3b4786ea3fde10", kill_on_drop: false }`
[INFO] [stdout] c41ee1d00885ea642ac5ada99fdbdb5d4106c2424fb530e9ce3b4786ea3fde10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e09905ee0e8b0f3ee2cc590652f7ec44a80258bccff8f878f9664f26e2fc67c
[INFO] running `Command { std: "docker" "start" "-a" "4e09905ee0e8b0f3ee2cc590652f7ec44a80258bccff8f878f9664f26e2fc67c", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
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[INFO] [stderr]    Compiling osmesa-sys v0.1.2
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[INFO] [stderr]    Compiling jpeg-decoder v0.2.2
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[INFO] [stderr]    Compiling plox v0.1.0 (/opt/rustwide/workdir/plox)
[INFO] [stderr]    Compiling plox-example v0.1.0 (/opt/rustwide/workdir/plox-example)
[INFO] [stdout] warning: method `circle_shader` is never used
[INFO] [stdout]    --> plox-example/src/main.rs:120:8
[INFO] [stdout]     |
[INFO] [stdout] 80  | impl Thing {
[INFO] [stdout]     | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 120 |     fn circle_shader(mut self, shader: CircleShader) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
[INFO] [stdout]    --> plox-example/src/main.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 209 |             let sorry = im as *mut Thing;
[INFO] [stdout]     |                         ---------------- casting happened here
[INFO] [stdout] 210 |             &mut *sorry
[INFO] [stdout]     |             ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
[INFO] [stdout]     = note: `#[deny(invalid_reference_casting)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `plox-example` (bin "plox-example") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "4e09905ee0e8b0f3ee2cc590652f7ec44a80258bccff8f878f9664f26e2fc67c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e09905ee0e8b0f3ee2cc590652f7ec44a80258bccff8f878f9664f26e2fc67c", kill_on_drop: false }`
[INFO] [stdout] 4e09905ee0e8b0f3ee2cc590652f7ec44a80258bccff8f878f9664f26e2fc67c