[INFO] cloning repository https://github.com/ToonSpin/alf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ToonSpin/alf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToonSpin%2Falf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToonSpin%2Falf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b7e0c651d5efa777fc8ede2bd8aa23b11c2b8a3
[INFO] checking ToonSpin/alf against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FToonSpin%2Falf" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ToonSpin/alf
[INFO] finished tweaking git repo https://github.com/ToonSpin/alf
[INFO] tweaked toml for git repo https://github.com/ToonSpin/alf written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ToonSpin/alf 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 git repo https://github.com/ToonSpin/alf 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 2ab72d26b18a18aa8dfe680f016ec310eb378201ceb0ff9370cdd13973fdbe2c
[INFO] running `Command { std: "docker" "start" "-a" "2ab72d26b18a18aa8dfe680f016ec310eb378201ceb0ff9370cdd13973fdbe2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ab72d26b18a18aa8dfe680f016ec310eb378201ceb0ff9370cdd13973fdbe2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ab72d26b18a18aa8dfe680f016ec310eb378201ceb0ff9370cdd13973fdbe2c", kill_on_drop: false }`
[INFO] [stdout] 2ab72d26b18a18aa8dfe680f016ec310eb378201ceb0ff9370cdd13973fdbe2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 445a67de86750915f2eada40d02f34917b9ba2e93e97ae956eb94a3885a9b466
[INFO] running `Command { std: "docker" "start" "-a" "445a67de86750915f2eada40d02f34917b9ba2e93e97ae956eb94a3885a9b466", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling bitflags v1.2.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.2
[INFO] [stderr]     Checking structopt v0.3.2
[INFO] [stderr]     Checking alf v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     /// A whitespace delimited list of fields to extract from each line
[INFO] [stdout] 16 | |     #[structopt(value_name = "field", short, long)]
[INFO] [stdout] 17 | |     fields: Option<Vec<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/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | /     /// The log format this program should expect
[INFO] [stdout] 20 | |     #[structopt(short = "F", long, possible_values = &["combined","combinedio","common","vhost_common",], default_value = "combined")]
[INFO] [stdout] 21 | |     format: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     /// Whether or not to color fields using ANSI color codes
[INFO] [stdout] 24 | |     #[structopt(short, long, possible_values = &["always","auto","never"], default_value = "auto")]
[INFO] [stdout] 25 | |     color: String,
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/log_parser.rs:171:28
[INFO] [stdout]     |
[INFO] [stdout] 171 |     pub fn new(log_format: &[LogField], fields: Option<Vec<String>>) -> LineParser {
[INFO] [stdout]     |                            ^^^^^^^^^^^ the lifetime is elided here      ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 171 |     pub fn new(log_format: &[LogField], fields: Option<Vec<String>>) -> LineParser<'_> {
[INFO] [stdout]     |                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `alf` (bin "alf" test) due to 3 previous errors; 1 warning emitted
[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/main.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     /// A whitespace delimited list of fields to extract from each line
[INFO] [stdout] 16 | |     #[structopt(value_name = "field", short, long)]
[INFO] [stdout] 17 | |     fields: Option<Vec<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/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | /     /// The log format this program should expect
[INFO] [stdout] 20 | |     #[structopt(short = "F", long, possible_values = &["combined","combinedio","common","vhost_common",], default_value = "combined")]
[INFO] [stdout] 21 | |     format: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     /// Whether or not to color fields using ANSI color codes
[INFO] [stdout] 24 | |     #[structopt(short, long, possible_values = &["always","auto","never"], default_value = "auto")]
[INFO] [stdout] 25 | |     color: String,
[INFO] [stdout]    | |_________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/log_parser.rs:171:28
[INFO] [stdout]     |
[INFO] [stdout] 171 |     pub fn new(log_format: &[LogField], fields: Option<Vec<String>>) -> LineParser {
[INFO] [stdout]     |                            ^^^^^^^^^^^ the lifetime is elided here      ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 171 |     pub fn new(log_format: &[LogField], fields: Option<Vec<String>>) -> LineParser<'_> {
[INFO] [stdout]     |                                                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `alf` (bin "alf") due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "445a67de86750915f2eada40d02f34917b9ba2e93e97ae956eb94a3885a9b466", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "445a67de86750915f2eada40d02f34917b9ba2e93e97ae956eb94a3885a9b466", kill_on_drop: false }`
[INFO] [stdout] 445a67de86750915f2eada40d02f34917b9ba2e93e97ae956eb94a3885a9b466
