[INFO] fetching crate bootstub-updater 1.0.0...
[INFO] checking bootstub-updater-1.0.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate bootstub-updater 1.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate bootstub-updater 1.0.0
[INFO] finished tweaking crates.io crate bootstub-updater 1.0.0
[INFO] tweaked toml for crates.io crate bootstub-updater 1.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate bootstub-updater 1.0.0 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 bootstub-updater 1.0.0 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] 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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6d103ad2f8dbe1e4aba7f1d7126f6b2193ff27177bd6bfa76887cc26a3fc382
[INFO] running `Command { std: "docker" "start" "-a" "f6d103ad2f8dbe1e4aba7f1d7126f6b2193ff27177bd6bfa76887cc26a3fc382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6d103ad2f8dbe1e4aba7f1d7126f6b2193ff27177bd6bfa76887cc26a3fc382", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6d103ad2f8dbe1e4aba7f1d7126f6b2193ff27177bd6bfa76887cc26a3fc382", kill_on_drop: false }`
[INFO] [stdout] f6d103ad2f8dbe1e4aba7f1d7126f6b2193ff27177bd6bfa76887cc26a3fc382
[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 -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] ea63939ee15bd4647a3c3ee12167148502012cf6a5b6ae0c39e17619bc094e8d
[INFO] running `Command { std: "docker" "start" "-a" "ea63939ee15bd4647a3c3ee12167148502012cf6a5b6ae0c39e17619bc094e8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking filetime v0.2.10
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking inotify v0.7.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking notify v4.0.15
[INFO] [stderr]    Compiling structopt-derive v0.4.9
[INFO] [stderr]     Checking structopt v0.3.16
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking bootstub-updater v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     #[structopt(
[INFO] [stdout] 22 | |         short,
[INFO] [stdout] 23 | |         long,
[INFO] [stdout] 24 | |         value_name = "COMMAND",
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |     )]
[INFO] [stdout] 28 | |     command: 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] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | /     #[structopt(
[INFO] [stdout] 31 | |         short,
[INFO] [stdout] 32 | |         long,
[INFO] [stdout] 33 | |         value_name = "NUM",
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     )]
[INFO] [stdout] 37 | |     bootnum: Option<String>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | /     #[structopt(
[INFO] [stdout] 40 | |         short,
[INFO] [stdout] 41 | |         long,
[INFO] [stdout] 42 | |         value_name = "FILENAME",
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |         )]
[INFO] [stdout] 46 | |     format: Option<String>,
[INFO] [stdout]    | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | /     #[structopt(
[INFO] [stdout] 49 | |         name = "toml",
[INFO] [stdout] 50 | |         short = "t",
[INFO] [stdout] 51 | |         long = "toml",
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |     #[serde(skip)]
[INFO] [stdout] 56 | |     config_location: Option<String>,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | /     #[structopt(
[INFO] [stdout] 59 | |         short = "k",
[INFO] [stdout] 60 | |         long = "kernel-dir",
[INFO] [stdout] 61 | |         value_name = "PATH",
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |     #[serde(rename = "kernel-dir")]
[INFO] [stdout] 65 | |     kernel_dir: Option<String>
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     #[structopt(
[INFO] [stdout] 22 | |         short,
[INFO] [stdout] 23 | |         long,
[INFO] [stdout] 24 | |         value_name = "COMMAND",
[INFO] [stdout] ...  |
[INFO] [stdout] 27 | |     )]
[INFO] [stdout] 28 | |     command: 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] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 | /     #[structopt(
[INFO] [stdout] 31 | |         short,
[INFO] [stdout] 32 | |         long,
[INFO] [stdout] 33 | |         value_name = "NUM",
[INFO] [stdout] ...  |
[INFO] [stdout] 36 | |     )]
[INFO] [stdout] 37 | |     bootnum: Option<String>,
[INFO] [stdout]    | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bootstub-updater` (bin "bootstub-updater") due to 5 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | /     #[structopt(
[INFO] [stdout] 40 | |         short,
[INFO] [stdout] 41 | |         long,
[INFO] [stdout] 42 | |         value_name = "FILENAME",
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |         )]
[INFO] [stdout] 46 | |     format: Option<String>,
[INFO] [stdout]    | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | /     #[structopt(
[INFO] [stdout] 49 | |         name = "toml",
[INFO] [stdout] 50 | |         short = "t",
[INFO] [stdout] 51 | |         long = "toml",
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |     #[serde(skip)]
[INFO] [stdout] 56 | |     config_location: Option<String>,
[INFO] [stdout]    | |___________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 | /     #[structopt(
[INFO] [stdout] 59 | |         short = "k",
[INFO] [stdout] 60 | |         long = "kernel-dir",
[INFO] [stdout] 61 | |         value_name = "PATH",
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |     #[serde(rename = "kernel-dir")]
[INFO] [stdout] 65 | |     kernel_dir: Option<String>
[INFO] [stdout]    | |______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bootstub-updater` (bin "bootstub-updater" test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "ea63939ee15bd4647a3c3ee12167148502012cf6a5b6ae0c39e17619bc094e8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea63939ee15bd4647a3c3ee12167148502012cf6a5b6ae0c39e17619bc094e8d", kill_on_drop: false }`
[INFO] [stdout] ea63939ee15bd4647a3c3ee12167148502012cf6a5b6ae0c39e17619bc094e8d
