[INFO] cloning repository https://github.com/kazchimo/purely-functional-data-stuructures.rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kazchimo/purely-functional-data-stuructures.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazchimo%2Fpurely-functional-data-stuructures.rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazchimo%2Fpurely-functional-data-stuructures.rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7259f58fdcce9dc859d18d9a3f24d71bebea301a [INFO] checking kazchimo/purely-functional-data-stuructures.rs against try#95813608313bff49cfc1afc393a946a3c085b772 for pr-148946 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazchimo%2Fpurely-functional-data-stuructures.rs" "/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/kazchimo/purely-functional-data-stuructures.rs [INFO] finished tweaking git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs [INFO] tweaked toml for git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs on toolchain 95813608313bff49cfc1afc393a946a3c085b772 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+95813608313bff49cfc1afc393a946a3c085b772" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs 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" "+95813608313bff49cfc1afc393a946a3c085b772" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking kazchimo/purely-functional-data-stuructures.rs against try#95813608313bff49cfc1afc393a946a3c085b772 for pr-148946 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkazchimo%2Fpurely-functional-data-stuructures.rs" "/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/kazchimo/purely-functional-data-stuructures.rs [INFO] finished tweaking git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs [INFO] tweaked toml for git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs on toolchain 95813608313bff49cfc1afc393a946a3c085b772 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+95813608313bff49cfc1afc393a946a3c085b772" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/kazchimo/purely-functional-data-stuructures.rs 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" "+95813608313bff49cfc1afc393a946a3c085b772" "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" "+95813608313bff49cfc1afc393a946a3c085b772" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b23b446f292d423c55d30c2b08bf370438661c7a72069269d89c7d3ece8f08c0 [INFO] running `Command { std: "docker" "start" "-a" "b23b446f292d423c55d30c2b08bf370438661c7a72069269d89c7d3ece8f08c0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b23b446f292d423c55d30c2b08bf370438661c7a72069269d89c7d3ece8f08c0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b23b446f292d423c55d30c2b08bf370438661c7a72069269d89c7d3ece8f08c0", kill_on_drop: false }` [INFO] [stdout] b23b446f292d423c55d30c2b08bf370438661c7a72069269d89c7d3ece8f08c0 [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" "+95813608313bff49cfc1afc393a946a3c085b772" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c5da69851d902eb2dfce6d6a599f502ff5b95f5cfc773196f817d21e4c45b174 [INFO] running `Command { std: "docker" "start" "-a" "c5da69851d902eb2dfce6d6a599f502ff5b95f5cfc773196f817d21e4c45b174", kill_on_drop: false }` [INFO] [stderr] Checking purely-functional-data-structures v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: enum `List` is never used [INFO] [stdout] --> src/list.rs:4:6 [INFO] [stdout] | [INFO] [stdout] 4 | enum List<'a, T> { [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 `empty`, `one`, `cons`, `is_empty`, `head`, and `tail` are never used [INFO] [stdout] --> src/list.rs:10:8 [INFO] [stdout] | [INFO] [stdout] 9 | impl List<'_, T> { [INFO] [stdout] | ------------------- associated items in this implementation [INFO] [stdout] 10 | fn empty() -> List<'static, T> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 14 | fn one(a: &T) -> List { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 18 | fn cons<'a>(x: &'a T, s: &'a List) -> List<'a, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 22 | fn is_empty(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 29 | fn head(&self) -> &T { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 36 | fn tail(&self) -> &List<'_, T> { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:14:15 [INFO] [stdout] | [INFO] [stdout] 14 | fn one(a: &T) -> List { [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] 14 | fn one(a: &T) -> List<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing [INFO] [stdout] --> src/list.rs:14:15 [INFO] [stdout] | [INFO] [stdout] 14 | fn one(a: &T) -> List { [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] 14 | fn one(a: &T) -> List<'_, T> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s [INFO] running `Command { std: "docker" "inspect" "c5da69851d902eb2dfce6d6a599f502ff5b95f5cfc773196f817d21e4c45b174", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5da69851d902eb2dfce6d6a599f502ff5b95f5cfc773196f817d21e4c45b174", kill_on_drop: false }` [INFO] [stdout] c5da69851d902eb2dfce6d6a599f502ff5b95f5cfc773196f817d21e4c45b174