[INFO] fetching crate llvmenv 0.3.2...
[INFO] checking llvmenv-0.3.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate llvmenv 0.3.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate llvmenv 0.3.2
[INFO] finished tweaking crates.io crate llvmenv 0.3.2
[INFO] tweaked toml for crates.io crate llvmenv 0.3.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate llvmenv 0.3.2 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 llvmenv 0.3.2 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] 7382d6cf0512493ab769580556f2d4e4ade05d5565c0a484a369247c61481379
[INFO] running `Command { std: "docker" "start" "-a" "7382d6cf0512493ab769580556f2d4e4ade05d5565c0a484a369247c61481379", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7382d6cf0512493ab769580556f2d4e4ade05d5565c0a484a369247c61481379", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7382d6cf0512493ab769580556f2d4e4ade05d5565c0a484a369247c61481379", kill_on_drop: false }`
[INFO] [stdout] 7382d6cf0512493ab769580556f2d4e4ade05d5565c0a484a369247c61481379
[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] 57654c33e68adcf86eeffa67a03e1746d8345ee6c56a8d0bff4637ac4fd4e2f9
[INFO] running `Command { std: "docker" "start" "-a" "57654c33e68adcf86eeffa67a03e1746d8345ee6c56a8d0bff4637ac4fd4e2f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
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[INFO] [stderr]    Compiling memchr v2.4.1
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[INFO] [stderr]    Compiling cc v1.0.71
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[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking futures-sink v0.3.17
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[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking futures-io v0.3.17
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[INFO] [stderr]     Checking tracing-core v0.1.21
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[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
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[INFO] [stderr]    Compiling num-traits v0.2.14
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[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking matches v0.1.9
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[INFO] [stderr]     Checking tinyvec_macros v0.1.0
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[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
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[INFO] [stderr]     Checking percent-encoding v2.1.0
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[INFO] [stderr]     Checking tracing v0.1.29
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[INFO] [stderr]    Compiling mime_guess v2.0.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling quote v1.0.10
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[INFO] [stderr]    Compiling lzma-sys v0.1.17
[INFO] [stderr]     Checking want v0.3.0
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[INFO] [stderr]     Checking socket2 v0.3.19
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[INFO] [stderr]     Checking ucd-trie v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling encoding_rs v0.8.28
[INFO] [stderr]     Checking httpdate v0.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
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[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
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[INFO] [stderr]     Checking either v1.6.1
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[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking clap v2.33.3
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[INFO] [stderr]     Checking filetime v0.2.15
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking remove_dir_all v0.5.3
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[INFO] [stderr]     Checking ipnet v2.3.1
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[INFO] [stderr]     Checking tar v0.4.37
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[INFO] [stderr]     Checking shellexpand v2.1.0
[INFO] [stderr]     Checking which v4.2.2
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[INFO] [stderr]     Checking semver-parser v0.10.2
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[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]     Checking http-body v0.3.1
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking simplelog v0.8.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]     Checking console v0.14.1
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking structopt v0.3.23
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking hyper v0.13.10
[INFO] [stderr]     Checking hyper-tls v0.4.3
[INFO] [stderr]     Checking reqwest v0.10.10
[INFO] [stderr]     Checking llvmenv v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `stdout` is never read
[INFO] [stdout]   --> src/error.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         stdout: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stderr` is never read
[INFO] [stdout]   --> src/error.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         stderr: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stdout` is never read
[INFO] [stdout]   --> src/error.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         stdout: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stderr` is never read
[INFO] [stdout]   --> src/error.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         stderr: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stdout` is never read
[INFO] [stdout]   --> src/error.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 72 |         stdout: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stderr` is never read
[INFO] [stdout]   --> src/error.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         stderr: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stdout` is never read
[INFO] [stdout]   --> src/error.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         stdout: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `stderr` is never read
[INFO] [stdout]   --> src/error.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 |         stderr: Option<String>,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         name: 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<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | /         #[structopt(
[INFO] [stdout] 35 | |             short = "G",
[INFO] [stdout] 36 | |             long = "builder",
[INFO] [stdout] 37 | |             help = "Overwrite cmake generator setting"
[INFO] [stdout] 38 | |         )]
[INFO] [stdout] 39 | |         builder: Option<String>,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 | /         #[structopt(short = "n", long = "name")]
[INFO] [stdout] 69 | |         name: Option<String>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:79:14
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Global { name: String },
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         name: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         name: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `llvmenv` (bin "llvmenv") due to 6 previous errors
[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/llvmenv.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         name: 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<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | /         #[structopt(
[INFO] [stdout] 35 | |             short = "G",
[INFO] [stdout] 36 | |             long = "builder",
[INFO] [stdout] 37 | |             help = "Overwrite cmake generator setting"
[INFO] [stdout] 38 | |         )]
[INFO] [stdout] 39 | |         builder: Option<String>,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 | /         #[structopt(short = "n", long = "name")]
[INFO] [stdout] 69 | |         name: Option<String>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:79:14
[INFO] [stdout]    |
[INFO] [stdout] 79 |     Global { name: String },
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         name: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/bin/llvmenv.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         name: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `llvmenv` (bin "llvmenv" test) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "57654c33e68adcf86eeffa67a03e1746d8345ee6c56a8d0bff4637ac4fd4e2f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57654c33e68adcf86eeffa67a03e1746d8345ee6c56a8d0bff4637ac4fd4e2f9", kill_on_drop: false }`
[INFO] [stdout] 57654c33e68adcf86eeffa67a03e1746d8345ee6c56a8d0bff4637ac4fd4e2f9
