[INFO] fetching crate chord-dht 0.1.0...
[INFO] checking chord-dht-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate chord-dht 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate chord-dht 0.1.0
[INFO] finished tweaking crates.io crate chord-dht 0.1.0
[INFO] tweaked toml for crates.io crate chord-dht 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate chord-dht 0.1.0 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 chord-dht 0.1.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] c5fa65154cc446a89385407cedff348e1b37654326a44c2c042971f2ba04ecc6
[INFO] running `Command { std: "docker" "start" "-a" "c5fa65154cc446a89385407cedff348e1b37654326a44c2c042971f2ba04ecc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5fa65154cc446a89385407cedff348e1b37654326a44c2c042971f2ba04ecc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5fa65154cc446a89385407cedff348e1b37654326a44c2c042971f2ba04ecc6", kill_on_drop: false }`
[INFO] [stdout] c5fa65154cc446a89385407cedff348e1b37654326a44c2c042971f2ba04ecc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5ffd1e50232b8b391e979f65471dbe870ef1ded013c4fbc3cc09f8bbdf780f6f
[INFO] running `Command { std: "docker" "start" "-a" "5ffd1e50232b8b391e979f65471dbe870ef1ded013c4fbc3cc09f8bbdf780f6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]    Compiling signal-hook v0.3.13
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tracing-core v0.1.22
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking mio v0.8.0
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling anyhow v1.0.55
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking crossterm v0.21.0
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]     Checking newline-converter v0.2.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling enum-ordinalize v3.1.11
[INFO] [stderr]    Compiling tracing-attributes v0.1.19
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]    Compiling educe v0.4.19
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]    Compiling tarpc-plugins v0.12.0
[INFO] [stderr]     Checking tracing v0.1.31
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking inquire v0.3.0-alpha.2
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking opentelemetry v0.16.0
[INFO] [stderr]     Checking tracing-opentelemetry v0.15.0
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking tokio-serde v0.8.0
[INFO] [stderr]     Checking tarpc v0.27.2
[INFO] [stderr]     Checking chord-dht 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/server-bin.rs:11:2
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// Local addr to bind (<host>:<port>)
[INFO] [stdout] 12 | |     addr: 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/server-bin.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     /// Join an existing node on init (<host>:<port>)
[INFO] [stdout] 15 | |     #[clap(short, long)]
[INFO] [stdout] 16 | |     join: Option<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/client-bin.rs:12:2
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     /// Server addr to connect to (<host>:<port>)
[INFO] [stdout] 13 | |     addr: 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 `chord-dht` (bin "chord-dht-server") due to 2 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/server-bin.rs:11:2
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     /// Local addr to bind (<host>:<port>)
[INFO] [stdout] 12 | |     addr: 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/server-bin.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     /// Join an existing node on init (<host>:<port>)
[INFO] [stdout] 15 | |     #[clap(short, long)]
[INFO] [stdout] 16 | |     join: Option<String>
[INFO] [stdout]    | |________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chord-dht` (bin "chord-dht-client") due to 1 previous error
[INFO] [stderr] error: could not compile `chord-dht` (bin "chord-dht-server" test) due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/client-bin.rs:12:2
[INFO] [stdout]    |
[INFO] [stdout] 12 | /     /// Server addr to connect to (<host>:<port>)
[INFO] [stdout] 13 | |     addr: 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 `chord-dht` (bin "chord-dht-client" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "5ffd1e50232b8b391e979f65471dbe870ef1ded013c4fbc3cc09f8bbdf780f6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ffd1e50232b8b391e979f65471dbe870ef1ded013c4fbc3cc09f8bbdf780f6f", kill_on_drop: false }`
[INFO] [stdout] 5ffd1e50232b8b391e979f65471dbe870ef1ded013c4fbc3cc09f8bbdf780f6f