[INFO] fetching crate rast 0.1.0-alpha.0...
[INFO] building rast-0.1.0-alpha.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate rast 0.1.0-alpha.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate rast 0.1.0-alpha.0
[INFO] finished tweaking crates.io crate rast 0.1.0-alpha.0
[INFO] tweaked toml for crates.io crate rast 0.1.0-alpha.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rast 0.1.0-alpha.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 35 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.7.1 (available: v0.11.8)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ac553b1e5e61659d7f70aa9b2c3a52ad1de64e42c40949a750e2f477043dbc0
[INFO] running `Command { std: "docker" "start" "-a" "0ac553b1e5e61659d7f70aa9b2c3a52ad1de64e42c40949a750e2f477043dbc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ac553b1e5e61659d7f70aa9b2c3a52ad1de64e42c40949a750e2f477043dbc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ac553b1e5e61659d7f70aa9b2c3a52ad1de64e42c40949a750e2f477043dbc0", kill_on_drop: false }`
[INFO] [stdout] 0ac553b1e5e61659d7f70aa9b2c3a52ad1de64e42c40949a750e2f477043dbc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8706ed06c38b24368bde9612b75a550669bfcafcc1c80e109c70f6f69af312a
[INFO] running `Command { std: "docker" "start" "-a" "b8706ed06c38b24368bde9612b75a550669bfcafcc1c80e109c70f6f69af312a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rast v0.1.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/raft.rs:766:11
[INFO] [stdout]     |
[INFO] [stdout] 766 |       let mut shared = self.shared_mut();
[INFO] [stdout]     |           ----^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/raft.rs:1053:9
[INFO] [stdout]      |
[INFO] [stdout] 1053 |     let mut shared = self.shared_mut();
[INFO] [stdout]      |         ----^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "b8706ed06c38b24368bde9612b75a550669bfcafcc1c80e109c70f6f69af312a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8706ed06c38b24368bde9612b75a550669bfcafcc1c80e109c70f6f69af312a", kill_on_drop: false }`
[INFO] [stdout] b8706ed06c38b24368bde9612b75a550669bfcafcc1c80e109c70f6f69af312a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfb049abf5b33cbd91b63c3550de250cd1b864eac5d31a58ec7c2097e7f10b30
[INFO] running `Command { std: "docker" "start" "-a" "cfb049abf5b33cbd91b63c3550de250cd1b864eac5d31a58ec7c2097e7f10b30", kill_on_drop: false }`
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling extreme v666.666.666666
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/raft.rs:766:11
[INFO] [stdout]     |
[INFO] [stdout] 766 |       let mut shared = self.shared_mut();
[INFO] [stdout]     |           ----^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/raft.rs:1053:9
[INFO] [stdout]      |
[INFO] [stdout] 1053 |     let mut shared = self.shared_mut();
[INFO] [stdout]      |         ----^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rast v0.1.0-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `nemesis::*`
[INFO] [stdout]    --> src/lib.rs:134:11
[INFO] [stdout]     |
[INFO] [stdout] 134 |   pub use nemesis::*;
[INFO] [stdout]     |           ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]     --> src/raft.rs:1053:9
[INFO] [stdout]      |
[INFO] [stdout] 1053 |     let mut shared = self.shared_mut();
[INFO] [stdout]      |         ----^^^^^^
[INFO] [stdout]      |         |
[INFO] [stdout]      |         help: remove this `mut`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/raft.rs:766:11
[INFO] [stdout]     |
[INFO] [stdout] 766 |       let mut shared = self.shared_mut();
[INFO] [stdout]     |           ----^^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `worker_idx`, `start`, `req`, and `finish` are never read
[INFO] [stdout]   --> src/nemesis/nemesis.rs:42:3
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct ReadOp {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 42 |   worker_idx: u64,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 43 |   start: Instant,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 44 |   req: ReadReq,
[INFO] [stdout]    |   ^^^
[INFO] [stdout] 45 |   res: Result<ReadRes, ClientError>,
[INFO] [stdout] 46 |   finish: Instant,
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ReadOp` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `worker_idx`, `start`, and `finish` are never read
[INFO] [stdout]   --> src/nemesis/nemesis.rs:51:3
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct WriteOp {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 51 |   worker_idx: u64,
[INFO] [stdout]    |   ^^^^^^^^^^
[INFO] [stdout] 52 |   start: Instant,
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 55 |   finish: Instant,
[INFO] [stdout]    |   ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WriteOp` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `state` is never read
[INFO] [stdout]   --> src/testutil/deterministic.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct DeterministicNode {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |   pub state: Vec<u8>,
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `nodes` and `tick` are never used
[INFO] [stdout]    --> src/testutil/deterministic.rs:259:6
[INFO] [stdout]     |
[INFO] [stdout] 257 | pub trait DeterministicGroup {
[INFO] [stdout]     |           ------------------ methods in this trait
[INFO] [stdout] 258 |   fn cfg(&self) -> &Config;
[INFO] [stdout] 259 |   fn nodes(&self) -> Vec<&DeterministicNode>;
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 262 |   fn tick(&mut self, inc: Duration) {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]    --> src/raft.rs:244:3
[INFO] [stdout]     |
[INFO] [stdout] 244 |   pub fn current_time(&self) -> Option<Instant> {
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:56:9
[INFO] [stdout]     |
[INFO] [stdout]  56 | #![warn(missing_docs, unsafe_code)]
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: missing documentation for a method
[INFO] [stdout]    --> src/raft.rs:249:3
[INFO] [stdout]     |
[INFO] [stdout] 249 |   pub fn current_term(&self) -> Term {
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/testutil/noopfuture.rs:45:54
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Poll::Pending => panic!("unexpectedly not ready: {:?}"),
[INFO] [stdout]    |                                                      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this message is not used as a format string when given without arguments, but will be in Rust 2021
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Poll::Pending => panic!("unexpectedly not ready: {:?}", ...),
[INFO] [stdout]    |                                                           +++++
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 45 |     Poll::Pending => panic!("{}", "unexpectedly not ready: {:?}"),
[INFO] [stdout]    |                             +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 5.54s
[INFO] running `Command { std: "docker" "inspect" "cfb049abf5b33cbd91b63c3550de250cd1b864eac5d31a58ec7c2097e7f10b30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfb049abf5b33cbd91b63c3550de250cd1b864eac5d31a58ec7c2097e7f10b30", kill_on_drop: false }`
[INFO] [stdout] cfb049abf5b33cbd91b63c3550de250cd1b864eac5d31a58ec7c2097e7f10b30