[INFO] cloning repository https://github.com/tchaudhry91/cowin-slack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tchaudhry91/cowin-slack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftchaudhry91%2Fcowin-slack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftchaudhry91%2Fcowin-slack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a3bd78b0059c3e0f68214bbe78c5af54b749a5a
[INFO] checking tchaudhry91/cowin-slack 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%2Ftchaudhry91%2Fcowin-slack" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tchaudhry91/cowin-slack
[INFO] finished tweaking git repo https://github.com/tchaudhry91/cowin-slack
[INFO] tweaked toml for git repo https://github.com/tchaudhry91/cowin-slack written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tchaudhry91/cowin-slack 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/tchaudhry91/cowin-slack 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b9a094e6ae14ba30fd3a38781ee0c121c5dfbc04b78ecbc66f66498e41066d19
[INFO] running `Command { std: "docker" "start" "-a" "b9a094e6ae14ba30fd3a38781ee0c121c5dfbc04b78ecbc66f66498e41066d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9a094e6ae14ba30fd3a38781ee0c121c5dfbc04b78ecbc66f66498e41066d19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9a094e6ae14ba30fd3a38781ee0c121c5dfbc04b78ecbc66f66498e41066d19", kill_on_drop: false }`
[INFO] [stdout] b9a094e6ae14ba30fd3a38781ee0c121c5dfbc04b78ecbc66f66498e41066d19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 6619ca96b6c65f4ed0a4b38d36d2a31e12461e12db0d193e48f438b6c635da00
[INFO] running `Command { std: "docker" "start" "-a" "6619ca96b6c65f4ed0a4b38d36d2a31e12461e12db0d193e48f438b6c635da00", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.0
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking http v0.2.4
[INFO] [stderr]     Checking futures-sink v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling httparse v1.4.1
[INFO] [stderr]     Checking futures-io v0.3.15
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking tinyvec v1.2.0
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking httpdate v1.0.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling openssl-src v111.15.0+1.1.1k
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking object v0.24.0
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking os_str_bytes v2.4.0
[INFO] [stderr]     Checking textwrap v0.12.1
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]    Compiling parse-zoneinfo v0.3.0
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]    Compiling chrono-tz v0.5.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking addr2line v0.15.1
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking hyper v0.14.7
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.3
[INFO] [stderr]     Checking cowin-slack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]    --> src/main.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 172 | /     #[clap(short, long, default_value = "188")]
[INFO] [stdout] 173 | |     district_id: 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:175:5
[INFO] [stdout]     |
[INFO] [stdout] 175 | /     #[clap(long)]
[INFO] [stdout] 176 | |     slack_hook: 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:178:5
[INFO] [stdout]     |
[INFO] [stdout] 178 | /     #[clap(long)]
[INFO] [stdout] 179 | |     slack_main_channel: 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:181:5
[INFO] [stdout]     |
[INFO] [stdout] 181 | /     #[clap(long)]
[INFO] [stdout] 182 | |     slack_debug_channel: String,
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cowin-slack` (bin "cowin-slack" test) due to 4 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<std::string::String, Infallible>
[INFO] [stdout]    --> src/main.rs:172:5
[INFO] [stdout]     |
[INFO] [stdout] 172 | /     #[clap(short, long, default_value = "188")]
[INFO] [stdout] 173 | |     district_id: 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:175:5
[INFO] [stdout]     |
[INFO] [stdout] 175 | /     #[clap(long)]
[INFO] [stdout] 176 | |     slack_hook: 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:178:5
[INFO] [stdout]     |
[INFO] [stdout] 178 | /     #[clap(long)]
[INFO] [stdout] 179 | |     slack_main_channel: 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:181:5
[INFO] [stdout]     |
[INFO] [stdout] 181 | /     #[clap(long)]
[INFO] [stdout] 182 | |     slack_debug_channel: String,
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cowin-slack` (bin "cowin-slack") due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "6619ca96b6c65f4ed0a4b38d36d2a31e12461e12db0d193e48f438b6c635da00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6619ca96b6c65f4ed0a4b38d36d2a31e12461e12db0d193e48f438b6c635da00", kill_on_drop: false }`
[INFO] [stdout] 6619ca96b6c65f4ed0a4b38d36d2a31e12461e12db0d193e48f438b6c635da00
