[INFO] cloning repository https://github.com/hotlatteiceamericano/message_queue_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hotlatteiceamericano/message_queue_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhotlatteiceamericano%2Fmessage_queue_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhotlatteiceamericano%2Fmessage_queue_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4808ac28673d9015cba31aefa95988e4e31f03b1
[INFO] checking hotlatteiceamericano/message_queue_rust against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhotlatteiceamericano%2Fmessage_queue_rust" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hotlatteiceamericano/message_queue_rust
[INFO] finished tweaking git repo https://github.com/hotlatteiceamericano/message_queue_rust
[INFO] tweaked toml for git repo https://github.com/hotlatteiceamericano/message_queue_rust written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hotlatteiceamericano/message_queue_rust on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hotlatteiceamericano/message_queue_rust 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff
[INFO] running `Command { std: "docker" "start" "bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking message_queue_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `read` and `self`
[INFO] [stdout]  --> src/storage/segment.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fs::{self, File, OpenOptions, create_dir_all, read},
[INFO] [stdout]   |          ^^^^                                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `read` and `self`
[INFO] [stdout]  --> src/storage/segment.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 |     fs::{self, File, OpenOptions, create_dir_all, read},
[INFO] [stdout]   |          ^^^^                                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConsumerGroup` is never constructed
[INFO] [stdout]  --> src/consumer_group/consumer_group.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ConsumerGroup {
[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 items `new`, `append`, and `read` are never used
[INFO] [stdout]   --> src/consumer_group/consumer_group.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ConsumerGroup {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 11 |     pub fn new(consumer_group_name: &str) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     pub fn append(&mut self, topic_name: &str, payload: &str) -> io::Result<u64> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn read(&mut self, topic_name: &str, offset: u64) -> io::Result<Message> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::io::Error`
[INFO] [stdout]    --> src/storage/segment.rs:110:38
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 Err(e) => return Err(e.into()),
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 110 -                 Err(e) => return Err(e.into()),
[INFO] [stdout] 110 +                 Err(e) => return Err(e),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 110 -                 Err(e) => return Err(e.into()),
[INFO] [stdout] 110 +                 Err(e) => return Err(<std::io::Error as Into<_>>::into(e)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::io::Error`
[INFO] [stdout]    --> src/storage/segment.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |           Err(io::Error::new(
[INFO] [stdout]     |  _____________^
[INFO] [stdout] 134 | |             io::ErrorKind::NotFound,
[INFO] [stdout] 135 | |             format!("did not find the message with offset: {}", offset),
[INFO] [stdout] 136 | |         )
[INFO] [stdout] 137 | |         .into())
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 136 -         )
[INFO] [stdout] 137 -         .into())
[INFO] [stdout] 136 +         ))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 133 ~         Err(<std::io::Error as Into<_>>::into(io::Error::new(
[INFO] [stdout] 134 |             io::ErrorKind::NotFound,
[INFO] [stdout] 135 |             format!("did not find the message with offset: {}", offset),
[INFO] [stdout] 136 ~         )))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `message_queue_rust` (bin "message_queue_rust") due to 2 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `name` and `topic_index` are never read
[INFO] [stdout]  --> src/consumer_group/consumer_group.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct ConsumerGroup {
[INFO] [stdout]   |            ------------- fields in this struct
[INFO] [stdout] 6 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 7 |     topic_index: HashMap<String, u64>,
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::io::Error`
[INFO] [stdout]    --> src/storage/segment.rs:110:38
[INFO] [stdout]     |
[INFO] [stdout] 110 |                 Err(e) => return Err(e.into()),
[INFO] [stdout]     |                                      ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 110 -                 Err(e) => return Err(e.into()),
[INFO] [stdout] 110 +                 Err(e) => return Err(e),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 110 -                 Err(e) => return Err(e.into()),
[INFO] [stdout] 110 +                 Err(e) => return Err(<std::io::Error as Into<_>>::into(e)),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `std::io::Error`
[INFO] [stdout]    --> src/storage/segment.rs:133:13
[INFO] [stdout]     |
[INFO] [stdout] 133 |           Err(io::Error::new(
[INFO] [stdout]     |  _____________^
[INFO] [stdout] 134 | |             io::ErrorKind::NotFound,
[INFO] [stdout] 135 | |             format!("did not find the message with offset: {}", offset),
[INFO] [stdout] 136 | |         )
[INFO] [stdout] 137 | |         .into())
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 136 -         )
[INFO] [stdout] 137 -         .into())
[INFO] [stdout] 136 +         ))
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 133 ~         Err(<std::io::Error as Into<_>>::into(io::Error::new(
[INFO] [stdout] 134 |             io::ErrorKind::NotFound,
[INFO] [stdout] 135 |             format!("did not find the message with offset: {}", offset),
[INFO] [stdout] 136 ~         )))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `message_queue_rust` (bin "message_queue_rust" test) due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff", kill_on_drop: false }`
[INFO] [stdout] bd17c0bda382ffd6415a0f6128abd5fa366b8cc539ea89479958fd07aa008cff
