[INFO] fetching crate reductor 0.0.12...
[INFO] checking reductor-0.0.12 against 656ccbe796ff98def9b555c118e1620c5389e3b2 for pr-133502-25
[INFO] extracting crate reductor 0.0.12 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate reductor 0.0.12
[INFO] finished tweaking crates.io crate reductor 0.0.12
[INFO] tweaked toml for crates.io crate reductor 0.0.12 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate reductor 0.0.12 on toolchain 656ccbe796ff98def9b555c118e1620c5389e3b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5
[INFO] running `Command { std: "docker" "start" "8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5", 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" "8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5" "/opt/rustwide/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5", 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" "8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5" "/opt/rustwide/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking reductor v0.0.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]   --> src/reductors/mean.rs:69:41
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 let Mean::<$f>(mean) = [0.48, 3., 2.64]
[INFO] [stdout]    |                                         ^^^^ help: explicitly specify the type as `f32`: `0.48_f32`
[INFO] [stdout] ...
[INFO] [stdout] 77 |         test!(f32);
[INFO] [stdout]    |         ---------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout]    = note: `#[warn(float_literal_f32_fallback)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]   --> src/reductors/mean.rs:69:47
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 let Mean::<$f>(mean) = [0.48, 3., 2.64]
[INFO] [stdout]    |                                               ^^ help: explicitly specify the type as `f32`: `3_f32`
[INFO] [stdout] ...
[INFO] [stdout] 77 |         test!(f32);
[INFO] [stdout]    |         ---------- in this macro invocation
[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: this warning originates in the macro `test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]   --> src/reductors/mean.rs:69:51
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 let Mean::<$f>(mean) = [0.48, 3., 2.64]
[INFO] [stdout]    |                                                   ^^^^ help: explicitly specify the type as `f32`: `2.64_f32`
[INFO] [stdout] ...
[INFO] [stdout] 77 |         test!(f32);
[INFO] [stdout]    |         ---------- in this macro invocation
[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: this warning originates in the macro `test` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5", kill_on_drop: false }`
[INFO] [stdout] 8c629059780b18d578c5c1f2e6fd3e773ccedb86b3a7502ad32397a8c1cc07f5