[INFO] fetching crate clickable-migration 0.3.0...
[INFO] checking clickable-migration-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate clickable-migration 0.3.0 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config
[INFO] started tweaking crates.io crate clickable-migration 0.3.0
[INFO] finished tweaking crates.io crate clickable-migration 0.3.0
[INFO] tweaked toml for crates.io crate clickable-migration 0.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate clickable-migration 0.3.0 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] crate crates.io crate clickable-migration 0.3.0 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] [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] 9dec280fede28870d82c7de9c802e547533eb61d6ac399b4263689323d09008c
[INFO] running `Command { std: "docker" "start" "-a" "9dec280fede28870d82c7de9c802e547533eb61d6ac399b4263689323d09008c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9dec280fede28870d82c7de9c802e547533eb61d6ac399b4263689323d09008c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dec280fede28870d82c7de9c802e547533eb61d6ac399b4263689323d09008c", kill_on_drop: false }`
[INFO] [stdout] 9dec280fede28870d82c7de9c802e547533eb61d6ac399b4263689323d09008c
[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] 2a471c211cdd007e33c7c0304bf9832e2580affdb13697f3cc6966575588a01f
[INFO] running `Command { std: "docker" "start" "-a" "2a471c211cdd007e33c7c0304bf9832e2580affdb13697f3cc6966575588a01f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.63
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking dtoa v0.4.7
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking regex v1.4.4
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking clickable-migration v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(long, short)]
[INFO] [stdout] 17 | |     pub project: Option<PathBuf>,
[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: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     /// Path to your clickable.json. Defaults to <project>/clickable.json.
[INFO] [stdout] 19 | |     #[structopt(long, short)]
[INFO] [stdout] 20 | |     pub clickable_json: Option<PathBuf>,
[INFO] [stdout]    | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     /// Custom destination path for your migrated Clickable config.
[INFO] [stdout] 22 | |     #[structopt(long)]
[INFO] [stdout] 23 | |     pub clickable_json_dst: Option<PathBuf>,
[INFO] [stdout]    | |___________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     /// Path to your Gitlab CI config. Defaults to <project>/.gitlab-ci.yml.
[INFO] [stdout] 25 | |     #[structopt(long, short)]
[INFO] [stdout] 26 | |     pub gitlab_ci: Option<PathBuf>,
[INFO] [stdout]    | |__________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     /// Custom destination path for your migrated Gitlab CI config.
[INFO] [stdout] 28 | |     #[structopt(long)]
[INFO] [stdout] 29 | |     pub gitlab_ci_dst: Option<PathBuf>,
[INFO] [stdout]    | |______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(long, short)]
[INFO] [stdout] 17 | |     pub project: Option<PathBuf>,
[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: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | /     /// Path to your clickable.json. Defaults to <project>/clickable.json.
[INFO] [stdout] 19 | |     #[structopt(long, short)]
[INFO] [stdout] 20 | |     pub clickable_json: Option<PathBuf>,
[INFO] [stdout]    | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     /// Custom destination path for your migrated Clickable config.
[INFO] [stdout] 22 | |     #[structopt(long)]
[INFO] [stdout] 23 | |     pub clickable_json_dst: Option<PathBuf>,
[INFO] [stdout]    | |___________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     /// Path to your Gitlab CI config. Defaults to <project>/.gitlab-ci.yml.
[INFO] [stdout] 25 | |     #[structopt(long, short)]
[INFO] [stdout] 26 | |     pub gitlab_ci: Option<PathBuf>,
[INFO] [stdout]    | |__________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/cli.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | /     /// Custom destination path for your migrated Gitlab CI config.
[INFO] [stdout] 28 | |     #[structopt(long)]
[INFO] [stdout] 29 | |     pub gitlab_ci_dst: Option<PathBuf>,
[INFO] [stdout]    | |______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `clickable-migration` (bin "clickable-migration" test) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `clickable-migration` (bin "clickable-migration") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "2a471c211cdd007e33c7c0304bf9832e2580affdb13697f3cc6966575588a01f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a471c211cdd007e33c7c0304bf9832e2580affdb13697f3cc6966575588a01f", kill_on_drop: false }`
[INFO] [stdout] 2a471c211cdd007e33c7c0304bf9832e2580affdb13697f3cc6966575588a01f
