[INFO] fetching crate halbu 0.1.0...
[INFO] checking halbu-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate halbu 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate halbu 0.1.0
[INFO] finished tweaking crates.io crate halbu 0.1.0
[INFO] tweaked toml for crates.io crate halbu 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate halbu 0.1.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 67 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75c25ed51a3786ccb535236d4ccdc2da88d09dd880f68ed9cb327f31c7423ad5
[INFO] running `Command { std: "docker" "start" "-a" "75c25ed51a3786ccb535236d4ccdc2da88d09dd880f68ed9cb327f31c7423ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75c25ed51a3786ccb535236d4ccdc2da88d09dd880f68ed9cb327f31c7423ad5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75c25ed51a3786ccb535236d4ccdc2da88d09dd880f68ed9cb327f31c7423ad5", kill_on_drop: false }`
[INFO] [stdout] 75c25ed51a3786ccb535236d4ccdc2da88d09dd880f68ed9cb327f31c7423ad5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ea89dbc41121d6a9fe4e975188dc41521520c9c7462803c62f6ae4b8696dd8f
[INFO] running `Command { std: "docker" "start" "-a" "5ea89dbc41121d6a9fe4e975188dc41521520c9c7462803c62f6ae4b8696dd8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling darling_core v0.21.3
[INFO] [stderr]     Checking bit v0.1.1
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]    Compiling darling_macro v0.21.3
[INFO] [stderr]    Compiling darling v0.21.3
[INFO] [stderr]    Compiling serde_with_macros v3.15.1
[INFO] [stderr]     Checking serde_with v3.15.1
[INFO] [stderr]     Checking halbu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::utils::*`
[INFO] [stdout]    --> src/lib.rs:378:9
[INFO] [stdout]     |
[INFO] [stdout] 378 |     use crate::utils::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `time::Duration`
[INFO] [stdout]    --> src/lib.rs:379:27
[INFO] [stdout]     |
[INFO] [stdout] 379 |     use std::{path::Path, time::Duration};
[INFO] [stdout]     |                           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:179:14
[INFO] [stdout]     |
[INFO] [stdout] 179 |             &byte_vector[ATTRIBUTES_OFFSET..byte_vector.len()].try_into().unwrap(),
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<u8>, Infallible>
[INFO] [stdout]    --> src/lib.rs:179:14
[INFO] [stdout]     |
[INFO] [stdout] 179 |             &byte_vector[ATTRIBUTES_OFFSET..byte_vector.len()].try_into().unwrap(),
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `halbu` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `halbu` (lib test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "5ea89dbc41121d6a9fe4e975188dc41521520c9c7462803c62f6ae4b8696dd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ea89dbc41121d6a9fe4e975188dc41521520c9c7462803c62f6ae4b8696dd8f", kill_on_drop: false }`
[INFO] [stdout] 5ea89dbc41121d6a9fe4e975188dc41521520c9c7462803c62f6ae4b8696dd8f