[INFO] fetching crate multibase-cli 0.1.1...
[INFO] checking multibase-cli-0.1.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate multibase-cli 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate multibase-cli 0.1.1
[INFO] finished tweaking crates.io crate multibase-cli 0.1.1
[INFO] tweaked toml for crates.io crate multibase-cli 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate multibase-cli 0.1.1 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] crate crates.io crate multibase-cli 0.1.1 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] 1dbf6330afca51b322c1a3e80f878df42f69a1ea1c0087c75707b6fda640c005
[INFO] running `Command { std: "docker" "start" "-a" "1dbf6330afca51b322c1a3e80f878df42f69a1ea1c0087c75707b6fda640c005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dbf6330afca51b322c1a3e80f878df42f69a1ea1c0087c75707b6fda640c005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dbf6330afca51b322c1a3e80f878df42f69a1ea1c0087c75707b6fda640c005", kill_on_drop: false }`
[INFO] [stdout] 1dbf6330afca51b322c1a3e80f878df42f69a1ea1c0087c75707b6fda640c005
[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] 4425f4e09e8b7ee4410ce58fb4aa9ea21609cf0175801ce2c70235b0d52667be
[INFO] running `Command { std: "docker" "start" "-a" "4425f4e09e8b7ee4410ce58fb4aa9ea21609cf0175801ce2c70235b0d52667be", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking base-x v0.2.6
[INFO] [stderr]     Checking multibase v0.6.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking multibase-cli v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/multibase.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | /         /// A multi-base encoded input
[INFO] [stdout] 12 | |         encoded: Option<String>,
[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 `multibase-cli` (bin "multibase" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/multibase.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | /         /// A multi-base encoded input
[INFO] [stdout] 12 | |         encoded: Option<String>,
[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 `multibase-cli` (bin "multibase") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "4425f4e09e8b7ee4410ce58fb4aa9ea21609cf0175801ce2c70235b0d52667be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4425f4e09e8b7ee4410ce58fb4aa9ea21609cf0175801ce2c70235b0d52667be", kill_on_drop: false }`
[INFO] [stdout] 4425f4e09e8b7ee4410ce58fb4aa9ea21609cf0175801ce2c70235b0d52667be