[INFO] fetching crate iamb 0.0.7...
[INFO] checking iamb-0.0.7 against try#d42a007e04d1d7df0de258d39ac2402f35aba932 for pr-103029-3
[INFO] extracting crate iamb 0.0.7 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate iamb 0.0.7 on toolchain d42a007e04d1d7df0de258d39ac2402f35aba932
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d42a007e04d1d7df0de258d39ac2402f35aba932" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate iamb 0.0.7
[INFO] finished tweaking crates.io crate iamb 0.0.7
[INFO] tweaked toml for crates.io crate iamb 0.0.7 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate iamb 0.0.7 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" "+d42a007e04d1d7df0de258d39ac2402f35aba932" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+d42a007e04d1d7df0de258d39ac2402f35aba932" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d73fa5f4cf949122d6bc58cb189583a51a9c35ddbb8724da0bf7e8358aaefe2
[INFO] running `Command { std: "docker" "start" "-a" "9d73fa5f4cf949122d6bc58cb189583a51a9c35ddbb8724da0bf7e8358aaefe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d73fa5f4cf949122d6bc58cb189583a51a9c35ddbb8724da0bf7e8358aaefe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d73fa5f4cf949122d6bc58cb189583a51a9c35ddbb8724da0bf7e8358aaefe2", kill_on_drop: false }`
[INFO] [stdout] 9d73fa5f4cf949122d6bc58cb189583a51a9c35ddbb8724da0bf7e8358aaefe2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+d42a007e04d1d7df0de258d39ac2402f35aba932" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 078ebe4866b900d28159744532ea6ae23ac234a09fbb59a0d647c12a985f8629
[INFO] running `Command { std: "docker" "start" "-a" "078ebe4866b900d28159744532ea6ae23ac234a09fbb59a0d647c12a985f8629", kill_on_drop: false }`
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/worker.rs:703:33
[INFO] [stdout]     |
[INFO] [stdout] 703 | ...                   let mut info = locked.application.rooms.get_or_default(room_id.clone());
[INFO] [stdout]     |                           ----^^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/worker.rs:703:33
[INFO] [stdout]     |
[INFO] [stdout] 703 | ...                   let mut info = locked.application.rooms.get_or_default(room_id.clone());
[INFO] [stdout]     |                           ----^^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 37s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "078ebe4866b900d28159744532ea6ae23ac234a09fbb59a0d647c12a985f8629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "078ebe4866b900d28159744532ea6ae23ac234a09fbb59a0d647c12a985f8629", kill_on_drop: false }`
[INFO] [stdout] 078ebe4866b900d28159744532ea6ae23ac234a09fbb59a0d647c12a985f8629