[INFO] cloning repository https://github.com/team-rust/mailbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/team-rust/mailbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteam-rust%2Fmailbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteam-rust%2Fmailbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1080ebc5bb1e9af9033169e806b52b05718376b7
[INFO] checking team-rust/mailbox against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fteam-rust%2Fmailbox" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/team-rust/mailbox
[INFO] finished tweaking git repo https://github.com/team-rust/mailbox
[INFO] tweaked toml for git repo https://github.com/team-rust/mailbox written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/team-rust/mailbox on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/team-rust/mailbox 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" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f20c0c82d3ba80f4763d3cf6bcb255591e187b9e0df4af261ed904474653a0d
[INFO] running `Command { std: "docker" "start" "-a" "4f20c0c82d3ba80f4763d3cf6bcb255591e187b9e0df4af261ed904474653a0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f20c0c82d3ba80f4763d3cf6bcb255591e187b9e0df4af261ed904474653a0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f20c0c82d3ba80f4763d3cf6bcb255591e187b9e0df4af261ed904474653a0d", kill_on_drop: false }`
[INFO] [stdout] 4f20c0c82d3ba80f4763d3cf6bcb255591e187b9e0df4af261ed904474653a0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 595ce5372f53414fb127a99cc35aa742af191a0d4efcc1cfde588af1847e726d
[INFO] running `Command { std: "docker" "start" "-a" "595ce5372f53414fb127a99cc35aa742af191a0d4efcc1cfde588af1847e726d", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking mailbox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Message` is never constructed
[INFO] [stdout]  --> src/mailbox.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Message {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/mailbox.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Message {
[INFO] [stdout]   | ------------ associated function in this implementation
[INFO] [stdout] 9 |     pub fn new(sender: String, receiver: String, body: String) -> Message {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Mailbox` is never constructed
[INFO] [stdout]   --> src/mailbox.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Mailbox {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `store`, and `fetch` are never used
[INFO] [stdout]   --> src/mailbox.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Mailbox {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 20 |     pub fn new() -> Mailbox {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn store(&mut self, m: Message) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     pub fn fetch(&mut self) -> Option<Message> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SyncedMailbox` is never constructed
[INFO] [stdout]  --> src/syncedmailbox.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct SyncedMailbox {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `store`, and `fetch` are never used
[INFO] [stdout]   --> src/syncedmailbox.rs:9:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl SyncedMailbox {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout]  9 |     fn new() -> SyncedMailbox {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 14 |     fn store(&self, m: mailbox::Message) -> Result<(), String> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn fetch(&self) -> Result<mailbox::Message, String> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "595ce5372f53414fb127a99cc35aa742af191a0d4efcc1cfde588af1847e726d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "595ce5372f53414fb127a99cc35aa742af191a0d4efcc1cfde588af1847e726d", kill_on_drop: false }`
[INFO] [stdout] 595ce5372f53414fb127a99cc35aa742af191a0d4efcc1cfde588af1847e726d