[INFO] fetching crate imap-client 0.2.3...
[INFO] testing imap-client-0.2.3 against 1.90.0 for beta-1.91-3
[INFO] extracting crate imap-client 0.2.3 into /workspace/builds/worker-4-tc1/source
[INFO] removed /workspace/builds/worker-4-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate imap-client 0.2.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate imap-client 0.2.3
[INFO] tweaked toml for crates.io crate imap-client 0.2.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate imap-client 0.2.3 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate imap-client 0.2.3 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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]   Downloaded openssl-src v300.4.1+3.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 780e3e7e8c545a30a2c85a7adc167e6110dc74a8802a895bc00512ea4cce9da4
[INFO] running `Command { std: "docker" "start" "-a" "780e3e7e8c545a30a2c85a7adc167e6110dc74a8802a895bc00512ea4cce9da4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "780e3e7e8c545a30a2c85a7adc167e6110dc74a8802a895bc00512ea4cce9da4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "780e3e7e8c545a30a2c85a7adc167e6110dc74a8802a895bc00512ea4cce9da4", kill_on_drop: false }`
[INFO] [stdout] 780e3e7e8c545a30a2c85a7adc167e6110dc74a8802a895bc00512ea4cce9da4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 142ab3500d3ee2216aae691d404b7e12539f6760277a5c2ccce2936e4c6ef6f2
[INFO] running `Command { std: "docker" "start" "-a" "142ab3500d3ee2216aae691d404b7e12539f6760277a5c2ccce2936e4c6ef6f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.14
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[INFO] [stderr]    Compiling tracing-core v0.1.33
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[INFO] [stderr]    Compiling imap-types v2.0.0-alpha.4
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[INFO] [stderr]    Compiling imap-client v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `host` is never read
[INFO] [stdout]    --> src/client/tokio.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub struct Client {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 164 |     host: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tasks/resolver.rs:24:29
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn resolve<T: Task>(&mut self, task: T) -> ResolvingTask<T> {
[INFO] [stdout]    |                             ^^^^^^^^^              ---------------- the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided 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: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn resolve<T: Task>(&mut self, task: T) -> ResolvingTask<'_, T> {
[INFO] [stdout]    |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 27.65s
[INFO] running `Command { std: "docker" "inspect" "142ab3500d3ee2216aae691d404b7e12539f6760277a5c2ccce2936e4c6ef6f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "142ab3500d3ee2216aae691d404b7e12539f6760277a5c2ccce2936e4c6ef6f2", kill_on_drop: false }`
[INFO] [stdout] 142ab3500d3ee2216aae691d404b7e12539f6760277a5c2ccce2936e4c6ef6f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 786ae56e2f0d24f1a450a27d1490a917b5c45595616a98191ff0b63a4437c4bd
[INFO] running `Command { std: "docker" "start" "-a" "786ae56e2f0d24f1a450a27d1490a917b5c45595616a98191ff0b63a4437c4bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling rustix v0.38.43
[INFO] [stderr]    Compiling memchr v2.7.4
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[INFO] [stderr]    Compiling parking_lot_core v0.9.10
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[INFO] [stderr]    Compiling blocking v1.6.1
[INFO] [stderr]    Compiling async-executor v1.13.1
[INFO] [stderr]    Compiling abnf-core v0.6.0
[INFO] [stderr]    Compiling imap-codec v2.0.0-alpha.5
[INFO] [stderr]    Compiling async-attributes v1.1.2
[INFO] [stderr]    Compiling polling v3.7.4
[INFO] [stderr]    Compiling async-io v2.4.0
[INFO] [stderr]    Compiling async-global-executor v2.4.1
[INFO] [stderr]    Compiling async-std v1.13.0
[INFO] [stderr]    Compiling tokio-rustls v0.26.1
[INFO] [stderr]    Compiling imap-next v0.3.1
[INFO] [stderr]    Compiling imap-client v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `host` is never read
[INFO] [stdout]    --> src/client/tokio.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub struct Client {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 164 |     host: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tasks/resolver.rs:24:29
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn resolve<T: Task>(&mut self, task: T) -> ResolvingTask<T> {
[INFO] [stdout]    |                             ^^^^^^^^^              ---------------- the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided 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: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn resolve<T: Task>(&mut self, task: T) -> ResolvingTask<'_, T> {
[INFO] [stdout]    |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `imap_client::Client`
[INFO] [stdout]  --> examples/fetch.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Client,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     no `Client` in the root
[INFO] [stdout]   |     help: a similar name exists in the module (notice the capitalization): `client`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider importing one of these structs instead:
[INFO] [stdout]           imap_client::client::Client
[INFO] [stdout]           imap_client::client::tokio::Client
[INFO] [stdout]           imap_next::client::Client
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imap-client` (example "fetch") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `host` is never read
[INFO] [stdout]    --> src/client/tokio.rs:164:5
[INFO] [stdout]     |
[INFO] [stdout] 163 | pub struct Client {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 164 |     host: String,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/tasks/resolver.rs:24:29
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn resolve<T: Task>(&mut self, task: T) -> ResolvingTask<T> {
[INFO] [stdout]    |                             ^^^^^^^^^              ---------------- the same lifetime is hidden here
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             the lifetime is elided 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: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn resolve<T: Task>(&mut self, task: T) -> ResolvingTask<'_, T> {
[INFO] [stdout]    |                                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "786ae56e2f0d24f1a450a27d1490a917b5c45595616a98191ff0b63a4437c4bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "786ae56e2f0d24f1a450a27d1490a917b5c45595616a98191ff0b63a4437c4bd", kill_on_drop: false }`
[INFO] [stdout] 786ae56e2f0d24f1a450a27d1490a917b5c45595616a98191ff0b63a4437c4bd