[INFO] fetching crate mzc 0.11.0...
[INFO] checking mzc-0.11.0 against master#6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd for pr-153721
[INFO] extracting crate mzc 0.11.0 into /workspace/builds/worker-2-tc1/source
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate mzc 0.11.0
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mzc 0.11.0
[INFO] tweaked toml for crates.io crate mzc 0.11.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mzc 0.11.0 on toolchain 6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mzc 0.11.0 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" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 849b702eb77b30791a313dcd7f0867352e8ad26c7323978b37c30c99682bb6fe
[INFO] running `Command { std: "docker" "start" "849b702eb77b30791a313dcd7f0867352e8ad26c7323978b37c30c99682bb6fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "849b702eb77b30791a313dcd7f0867352e8ad26c7323978b37c30c99682bb6fe" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "849b702eb77b30791a313dcd7f0867352e8ad26c7323978b37c30c99682bb6fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "849b702eb77b30791a313dcd7f0867352e8ad26c7323978b37c30c99682bb6fe" "/opt/rustwide/cargo-home/bin/cargo" "+6eda7419e71fdbc1185ed5be7e6bff1a474ab5cd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]    Compiling mzc v0.11.0 (/opt/rustwide/workdir)
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[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]     --> src/gui.rs:1869:48
[INFO] [stdout]      |
[INFO] [stdout] 1869 | ...                   let stroke_width = 10.0;
[INFO] [stdout]      |                                          ^^^^ help: explicitly specify the type as `f32`: `10.0_f32`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout]      = note: `#[warn(float_literal_f32_fallback)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]     --> src/gui.rs:1869:48
[INFO] [stdout]      |
[INFO] [stdout] 1869 | ...                   let stroke_width = 10.0;
[INFO] [stdout]      |                                          ^^^^ help: explicitly specify the type as `f32`: `10.0_f32`
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout]      = note: `#[warn(float_literal_f32_fallback)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> tests/roundtrip_tests.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let mut next_random_byte = |seed_ref: &mut u64| -> u8 {
[INFO] [stdout]     |         ----^^^^^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 28s
[INFO] running `Command { std: "docker" "inspect" "849b702eb77b30791a313dcd7f0867352e8ad26c7323978b37c30c99682bb6fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "849b702eb77b30791a313dcd7f0867352e8ad26c7323978b37c30c99682bb6fe", kill_on_drop: false }`
[INFO] [stdout] 849b702eb77b30791a313dcd7f0867352e8ad26c7323978b37c30c99682bb6fe
