[INFO] cloning repository https://github.com/ddmngz/rust-copy-update
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ddmngz/rust-copy-update" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddmngz%2Frust-copy-update", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddmngz%2Frust-copy-update'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 337486519b07b8ad2396211e6f326016a6abb6bb
[INFO] checking ddmngz/rust-copy-update against try#04ea1e1f1a12cfa912c228ca278237d92d0bb6df for pr-148477-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddmngz%2Frust-copy-update" "/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/ddmngz/rust-copy-update
[INFO] finished tweaking git repo https://github.com/ddmngz/rust-copy-update
[INFO] tweaked toml for git repo https://github.com/ddmngz/rust-copy-update written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ddmngz/rust-copy-update on toolchain 04ea1e1f1a12cfa912c228ca278237d92d0bb6df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ddmngz/rust-copy-update 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" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking ddmngz/rust-copy-update against try#04ea1e1f1a12cfa912c228ca278237d92d0bb6df for pr-148477-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fddmngz%2Frust-copy-update" "/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/ddmngz/rust-copy-update
[INFO] finished tweaking git repo https://github.com/ddmngz/rust-copy-update
[INFO] tweaked toml for git repo https://github.com/ddmngz/rust-copy-update written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ddmngz/rust-copy-update on toolchain 04ea1e1f1a12cfa912c228ca278237d92d0bb6df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ddmngz/rust-copy-update 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" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "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-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" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8923cbb0f129d495c4463e85d8c805eac2de48ad40450844d45a045d3e14cee4
[INFO] running `Command { std: "docker" "start" "-a" "8923cbb0f129d495c4463e85d8c805eac2de48ad40450844d45a045d3e14cee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8923cbb0f129d495c4463e85d8c805eac2de48ad40450844d45a045d3e14cee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8923cbb0f129d495c4463e85d8c805eac2de48ad40450844d45a045d3e14cee4", kill_on_drop: false }`
[INFO] [stdout] 8923cbb0f129d495c4463e85d8c805eac2de48ad40450844d45a045d3e14cee4
[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" "-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" "+04ea1e1f1a12cfa912c228ca278237d92d0bb6df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34cc76c722202c5f44fbba46388464339c77b6dd1eb29b902753684201789c63
[INFO] running `Command { std: "docker" "start" "-a" "34cc76c722202c5f44fbba46388464339c77b6dd1eb29b902753684201789c63", kill_on_drop: false }`
[INFO] [stderr]     Checking rcu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `RcuWriteGuard<'a, T>` is more private than the item `Rcu::WriteGuard`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     type WriteGuard: RcuWriteGuard<'a, T>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated type `Rcu::WriteGuard` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but trait `RcuWriteGuard<'a, T>` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait RcuWriteGuard<'a, T: Sync + 'a> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/evil_rcu.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<'a, T: Sync + 'a> EvilRcu<T> {
[INFO] [stdout]    | --------------------------------- associated function in this implementation
[INFO] [stdout] 36 |     fn new(data: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/evil_rcu.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl<T: Sync> EvilRcuInner<T> {
[INFO] [stdout]    | ----------------------------- associated function in this implementation
[INFO] [stdout] 55 |     fn new(data: Arc<T>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `RcuWriteGuard<'a, T>` is more private than the item `Rcu::WriteGuard`
[INFO] [stdout]   --> src/lib.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     type WriteGuard: RcuWriteGuard<'a, T>;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated type `Rcu::WriteGuard` is reachable at visibility `pub`
[INFO] [stdout]    |
[INFO] [stdout] note: but trait `RcuWriteGuard<'a, T>` is only usable at visibility `pub(crate)`
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait RcuWriteGuard<'a, T: Sync + 'a> {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(private_bounds)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/evil_rcu.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 35 | impl<'a, T: Sync + 'a> EvilRcu<T> {
[INFO] [stdout]    | --------------------------------- associated function in this implementation
[INFO] [stdout] 36 |     fn new(data: T) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/evil_rcu.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl<T: Sync> EvilRcuInner<T> {
[INFO] [stdout]    | ----------------------------- associated function in this implementation
[INFO] [stdout] 55 |     fn new(data: Arc<T>) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/evil_rcu.rs:26:27
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn write(&'a self) -> EvilWriteGuard<T> {
[INFO] [stdout]    |               --          ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |               |
[INFO] [stdout]    |               the lifetime is named 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: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn write(&'a self) -> EvilWriteGuard<'a, T> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/evil_rcu.rs:26:27
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn write(&'a self) -> EvilWriteGuard<T> {
[INFO] [stdout]    |               --          ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |               |
[INFO] [stdout]    |               the lifetime is named 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: consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn write(&'a self) -> EvilWriteGuard<'a, T> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "34cc76c722202c5f44fbba46388464339c77b6dd1eb29b902753684201789c63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34cc76c722202c5f44fbba46388464339c77b6dd1eb29b902753684201789c63", kill_on_drop: false }`
[INFO] [stdout] 34cc76c722202c5f44fbba46388464339c77b6dd1eb29b902753684201789c63