[INFO] fetching crate wasmlet 0.0.2...
[INFO] checking wasmlet-0.0.2 against try#54e27f559f23913c1d5afb1a0f0114e9e61b81b8 for pr-147589
[INFO] extracting crate wasmlet 0.0.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate wasmlet 0.0.2
[INFO] finished tweaking crates.io crate wasmlet 0.0.2
[INFO] tweaked toml for crates.io crate wasmlet 0.0.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wasmlet 0.0.2 on toolchain 54e27f559f23913c1d5afb1a0f0114e9e61b81b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wasmlet 0.0.2 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" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6de83643a884a151e35689a665d45aa9bb77cf579f6397f7b1c70bfc1daf3cd2
[INFO] running `Command { std: "docker" "start" "-a" "6de83643a884a151e35689a665d45aa9bb77cf579f6397f7b1c70bfc1daf3cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6de83643a884a151e35689a665d45aa9bb77cf579f6397f7b1c70bfc1daf3cd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6de83643a884a151e35689a665d45aa9bb77cf579f6397f7b1c70bfc1daf3cd2", kill_on_drop: false }`
[INFO] [stdout] 6de83643a884a151e35689a665d45aa9bb77cf579f6397f7b1c70bfc1daf3cd2
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+54e27f559f23913c1d5afb1a0f0114e9e61b81b8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d22454a51914a30ca8d6620fdae553d027fde0db476b89aa688393d6fdce18cb
[INFO] running `Command { std: "docker" "start" "-a" "d22454a51914a30ca8d6620fdae553d027fde0db476b89aa688393d6fdce18cb", kill_on_drop: false }`
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine/wasi/io/mod.rs:234:21
[INFO] [stdout]     |
[INFO] [stdout] 234 |                 let mut max = u64::try_from(max).unwrap_or(u64::MAX);
[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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine/wasi/io/mod.rs:234:21
[INFO] [stdout]     |
[INFO] [stdout] 234 |                 let mut max = u64::try_from(max).unwrap_or(u64::MAX);
[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 1m 12s
[INFO] running `Command { std: "docker" "inspect" "d22454a51914a30ca8d6620fdae553d027fde0db476b89aa688393d6fdce18cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d22454a51914a30ca8d6620fdae553d027fde0db476b89aa688393d6fdce18cb", kill_on_drop: false }`
[INFO] [stdout] d22454a51914a30ca8d6620fdae553d027fde0db476b89aa688393d6fdce18cb