[INFO] fetching crate wcp 0.1.5...
[INFO] checking wcp-0.1.5 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate wcp 0.1.5 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate wcp 0.1.5
[INFO] finished tweaking crates.io crate wcp 0.1.5
[INFO] tweaked toml for crates.io crate wcp 0.1.5 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wcp 0.1.5 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 wcp 0.1.5 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] f08d35657ba735cfdfa1f1bc8367ace68aaa5a0e7bb55902ccd0be37ef334a6b
[INFO] running `Command { std: "docker" "start" "-a" "f08d35657ba735cfdfa1f1bc8367ace68aaa5a0e7bb55902ccd0be37ef334a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f08d35657ba735cfdfa1f1bc8367ace68aaa5a0e7bb55902ccd0be37ef334a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f08d35657ba735cfdfa1f1bc8367ace68aaa5a0e7bb55902ccd0be37ef334a6b", kill_on_drop: false }`
[INFO] [stdout] f08d35657ba735cfdfa1f1bc8367ace68aaa5a0e7bb55902ccd0be37ef334a6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3a94d30b56a186f1de2a9c7286e56d0f546e597ca1f58c1b21e6182ce45ed273
[INFO] running `Command { std: "docker" "start" "-a" "3a94d30b56a186f1de2a9c7286e56d0f546e597ca1f58c1b21e6182ce45ed273", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking once_cell v1.13.1
[INFO] [stderr]    Compiling openssl v0.10.41
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking hashbrown v0.3.1
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking console v0.15.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling openssl-sys v0.9.75
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking indicatif v0.13.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking http_io v0.2.16
[INFO] [stderr]     Checking wcp v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Http(http_io::error::Error),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 17 -     Http(http_io::error::Error),
[INFO] [stdout] 17 +     Http(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Io(io::Error),
[INFO] [stdout]    |     -- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 18 -     Io(io::Error),
[INFO] [stdout] 18 +     Io(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:52:66
[INFO] [stdout]    |
[INFO] [stdout] 52 |       fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
[INFO] [stdout]    |  __________________________________________________________________^
[INFO] [stdout] 53 | |         if let Ok(p) = s.parse() {
[INFO] [stdout] 54 | |             Ok(Self::Remote(p))
[INFO] [stdout] 55 | |         } else {
[INFO] [stdout] ...  |
[INFO] [stdout] 58 | |     }
[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<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 | /         if let Ok(p) = s.parse() {
[INFO] [stdout] 54 | |             Ok(Self::Remote(p))
[INFO] [stdout] 55 | |         } else {
[INFO] [stdout] 56 | |             Ok(Self::Local(PathBuf::from(s)))
[INFO] [stdout] 57 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:53:34
[INFO] [stdout]    |
[INFO] [stdout] 53 |           if let Ok(p) = s.parse() {
[INFO] [stdout]    |  __________________________________^
[INFO] [stdout] 54 | |             Ok(Self::Remote(p))
[INFO] [stdout] 55 | |         } else {
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             Ok(Self::Remote(p))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:55:16
[INFO] [stdout]    |
[INFO] [stdout] 55 |           } else {
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 56 | |             Ok(Self::Local(PathBuf::from(s)))
[INFO] [stdout] 57 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Ok(Self::Local(PathBuf::from(s)))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]    --> src/main.rs:237:5
[INFO] [stdout]     |
[INFO] [stdout] 237 |     source: Location,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]    --> src/main.rs:238:5
[INFO] [stdout]     |
[INFO] [stdout] 238 |     destination: Location,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wcp` (bin "wcp" test) due to 8 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 |     Http(http_io::error::Error),
[INFO] [stdout]    |     ---- ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 17 -     Http(http_io::error::Error),
[INFO] [stdout] 17 +     Http(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Io(io::Error),
[INFO] [stdout]    |     -- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 18 -     Io(io::Error),
[INFO] [stdout] 18 +     Io(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:52:66
[INFO] [stdout]    |
[INFO] [stdout] 52 |       fn from_str(s: &str) -> std::result::Result<Self, Self::Err> {
[INFO] [stdout]    |  __________________________________________________________________^
[INFO] [stdout] 53 | |         if let Ok(p) = s.parse() {
[INFO] [stdout] 54 | |             Ok(Self::Remote(p))
[INFO] [stdout] 55 | |         } else {
[INFO] [stdout] ...  |
[INFO] [stdout] 58 | |     }
[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<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 | /         if let Ok(p) = s.parse() {
[INFO] [stdout] 54 | |             Ok(Self::Remote(p))
[INFO] [stdout] 55 | |         } else {
[INFO] [stdout] 56 | |             Ok(Self::Local(PathBuf::from(s)))
[INFO] [stdout] 57 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:53:34
[INFO] [stdout]    |
[INFO] [stdout] 53 |           if let Ok(p) = s.parse() {
[INFO] [stdout]    |  __________________________________^
[INFO] [stdout] 54 | |             Ok(Self::Remote(p))
[INFO] [stdout] 55 | |         } else {
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:54:13
[INFO] [stdout]    |
[INFO] [stdout] 54 |             Ok(Self::Remote(p))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:55:16
[INFO] [stdout]    |
[INFO] [stdout] 55 |           } else {
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 56 | |             Ok(Self::Local(PathBuf::from(s)))
[INFO] [stdout] 57 | |         }
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]   --> src/main.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |             Ok(Self::Local(PathBuf::from(s)))
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]    --> src/main.rs:237:5
[INFO] [stdout]     |
[INFO] [stdout] 237 |     source: Location,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<Location, Infallible>
[INFO] [stdout]    --> src/main.rs:238:5
[INFO] [stdout]     |
[INFO] [stdout] 238 |     destination: Location,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wcp` (bin "wcp") due to 8 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "3a94d30b56a186f1de2a9c7286e56d0f546e597ca1f58c1b21e6182ce45ed273", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a94d30b56a186f1de2a9c7286e56d0f546e597ca1f58c1b21e6182ce45ed273", kill_on_drop: false }`
[INFO] [stdout] 3a94d30b56a186f1de2a9c7286e56d0f546e597ca1f58c1b21e6182ce45ed273