[INFO] cloning repository https://github.com/n2pm/nnc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/n2pm/nnc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fn2pm%2Fnnc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fn2pm%2Fnnc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e6af45d263fb7f23d33b5d730d5ecd1b68f6941f
[INFO] checking n2pm/nnc 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%2Fn2pm%2Fnnc" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/n2pm/nnc
[INFO] finished tweaking git repo https://github.com/n2pm/nnc
[INFO] tweaked toml for git repo https://github.com/n2pm/nnc written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/n2pm/nnc 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/n2pm/nnc 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8d6e2629d83fd6b289b02e334bc350a201cb322cba204f56c420d774451758cf
[INFO] running `Command { std: "docker" "start" "-a" "8d6e2629d83fd6b289b02e334bc350a201cb322cba204f56c420d774451758cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d6e2629d83fd6b289b02e334bc350a201cb322cba204f56c420d774451758cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d6e2629d83fd6b289b02e334bc350a201cb322cba204f56c420d774451758cf", kill_on_drop: false }`
[INFO] [stdout] 8d6e2629d83fd6b289b02e334bc350a201cb322cba204f56c420d774451758cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 67331af289731a0185102d23c6507943d3d5a7eb2aadd7fb83b9eb77ef808873
[INFO] running `Command { std: "docker" "start" "-a" "67331af289731a0185102d23c6507943d3d5a7eb2aadd7fb83b9eb77ef808873", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling openssl-sys v0.9.74
[INFO] [stderr]    Compiling openssl v0.10.40
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking indexmap v1.9.1
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]    Compiling serde_json v1.0.82
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling eyre v0.6.8
[INFO] [stderr]     Checking miniz_oxide v0.5.3
[INFO] [stderr]     Checking object v0.28.4
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking os_str_bytes v6.1.0
[INFO] [stderr]    Compiling anyhow v1.0.58
[INFO] [stderr]     Checking owo-colors v3.4.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking num-integer v0.1.45
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]     Checking open v3.0.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tracing-subscriber v0.3.14
[INFO] [stderr]     Checking tracing-error v0.2.0
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking color-eyre v0.6.1
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling clap_derive v3.2.7
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking clap v3.2.8
[INFO] [stderr]     Checking hyper v0.14.19
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking reqwest v0.11.11
[INFO] [stderr]     Checking nnc 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:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         to: String,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nnc` (bin "nnc" test) due to 1 previous error
[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:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |         to: String,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nnc` (bin "nnc") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "67331af289731a0185102d23c6507943d3d5a7eb2aadd7fb83b9eb77ef808873", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67331af289731a0185102d23c6507943d3d5a7eb2aadd7fb83b9eb77ef808873", kill_on_drop: false }`
[INFO] [stdout] 67331af289731a0185102d23c6507943d3d5a7eb2aadd7fb83b9eb77ef808873