[INFO] cloning repository https://github.com/JoanneGeng/firstrust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoanneGeng/firstrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoanneGeng%2Ffirstrust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoanneGeng%2Ffirstrust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 124658cde20d7083024d5870a2ca535f5770021f [INFO] testing JoanneGeng/firstrust against master#61223975d46f794466efa832bc7562b9707ecc46+rustflags=-Copt-level=3 for pr-121282 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoanneGeng%2Ffirstrust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JoanneGeng/firstrust on toolchain 61223975d46f794466efa832bc7562b9707ecc46 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61223975d46f794466efa832bc7562b9707ecc46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JoanneGeng/firstrust [INFO] finished tweaking git repo https://github.com/JoanneGeng/firstrust [INFO] tweaked toml for git repo https://github.com/JoanneGeng/firstrust written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/JoanneGeng/firstrust 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" "+61223975d46f794466efa832bc7562b9707ecc46" "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 [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] testing JoanneGeng/firstrust against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoanneGeng%2Ffirstrust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JoanneGeng/firstrust on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JoanneGeng/firstrust [INFO] finished tweaking git repo https://github.com/JoanneGeng/firstrust [INFO] tweaked toml for git repo https://github.com/JoanneGeng/firstrust written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/JoanneGeng/firstrust 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" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ec3bc4ec001e5127e2743b270ecf2ccca87d235f209a1799d6803f546e2f8e36 [INFO] running `Command { std: "docker" "start" "-a" "ec3bc4ec001e5127e2743b270ecf2ccca87d235f209a1799d6803f546e2f8e36", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ec3bc4ec001e5127e2743b270ecf2ccca87d235f209a1799d6803f546e2f8e36", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec3bc4ec001e5127e2743b270ecf2ccca87d235f209a1799d6803f546e2f8e36", kill_on_drop: false }` [INFO] [stdout] ec3bc4ec001e5127e2743b270ecf2ccca87d235f209a1799d6803f546e2f8e36 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6f77b0ef04da5f3417c0dd4020f868f8259079e04db509457f981653268c66ab [INFO] running `Command { std: "docker" "start" "-a" "6f77b0ef04da5f3417c0dd4020f868f8259079e04db509457f981653268c66ab", kill_on_drop: false }` [INFO] [stderr] Compiling firstrust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `ownership_and_copy_main` is never used [INFO] [stdout] --> src/ownership.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | pub(crate) fn ownership_and_copy_main() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_ownership` is never used [INFO] [stdout] --> src/ownership.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn takes_ownership(some_string: String) { // some_string comes into scope. [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `makes_copy` is never used [INFO] [stdout] --> src/ownership.rs:30:4 [INFO] [stdout] | [INFO] [stdout] 30 | fn makes_copy(some_integer: i32) { // some_integer comes into scope. [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `return_and_scope_main` is never used [INFO] [stdout] --> src/ownership.rs:38:15 [INFO] [stdout] | [INFO] [stdout] 38 | pub(crate) fn return_and_scope_main() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `gives_ownership` is never used [INFO] [stdout] --> src/ownership.rs:54:4 [INFO] [stdout] | [INFO] [stdout] 54 | fn gives_ownership() -> String { // gives_ownership will move its [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_and_gives_back` is never used [INFO] [stdout] --> src/ownership.rs:66:4 [INFO] [stdout] | [INFO] [stdout] 66 | fn takes_and_gives_back(a_string: String) -> String { // a_string comes into [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `tuple_main` is never used [INFO] [stdout] --> src/ownership.rs:75:15 [INFO] [stdout] | [INFO] [stdout] 75 | pub(crate) fn tuple_main() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `calculate_length` is never used [INFO] [stdout] --> src/ownership.rs:83:4 [INFO] [stdout] | [INFO] [stdout] 83 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s [INFO] running `Command { std: "docker" "inspect" "6f77b0ef04da5f3417c0dd4020f868f8259079e04db509457f981653268c66ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f77b0ef04da5f3417c0dd4020f868f8259079e04db509457f981653268c66ab", kill_on_drop: false }` [INFO] [stdout] 6f77b0ef04da5f3417c0dd4020f868f8259079e04db509457f981653268c66ab [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 65e94d1d3e249f8242e441d003dc77d159a8a00e1665d268b5e2166ddf821e9b [INFO] running `Command { std: "docker" "start" "-a" "65e94d1d3e249f8242e441d003dc77d159a8a00e1665d268b5e2166ddf821e9b", kill_on_drop: false }` [INFO] [stderr] Compiling firstrust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function `ownership_and_copy_main` is never used [INFO] [stdout] --> src/ownership.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | pub(crate) fn ownership_and_copy_main() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_ownership` is never used [INFO] [stdout] --> src/ownership.rs:25:4 [INFO] [stdout] | [INFO] [stdout] 25 | fn takes_ownership(some_string: String) { // some_string comes into scope. [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `makes_copy` is never used [INFO] [stdout] --> src/ownership.rs:30:4 [INFO] [stdout] | [INFO] [stdout] 30 | fn makes_copy(some_integer: i32) { // some_integer comes into scope. [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `return_and_scope_main` is never used [INFO] [stdout] --> src/ownership.rs:38:15 [INFO] [stdout] | [INFO] [stdout] 38 | pub(crate) fn return_and_scope_main() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `gives_ownership` is never used [INFO] [stdout] --> src/ownership.rs:54:4 [INFO] [stdout] | [INFO] [stdout] 54 | fn gives_ownership() -> String { // gives_ownership will move its [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `takes_and_gives_back` is never used [INFO] [stdout] --> src/ownership.rs:66:4 [INFO] [stdout] | [INFO] [stdout] 66 | fn takes_and_gives_back(a_string: String) -> String { // a_string comes into [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `tuple_main` is never used [INFO] [stdout] --> src/ownership.rs:75:15 [INFO] [stdout] | [INFO] [stdout] 75 | pub(crate) fn tuple_main() { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `calculate_length` is never used [INFO] [stdout] --> src/ownership.rs:83:4 [INFO] [stdout] | [INFO] [stdout] 83 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s [INFO] running `Command { std: "docker" "inspect" "65e94d1d3e249f8242e441d003dc77d159a8a00e1665d268b5e2166ddf821e9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "65e94d1d3e249f8242e441d003dc77d159a8a00e1665d268b5e2166ddf821e9b", kill_on_drop: false }` [INFO] [stdout] 65e94d1d3e249f8242e441d003dc77d159a8a00e1665d268b5e2166ddf821e9b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Copt-level=3" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 46bac0ad58285b423fb01c647130edf704019b50e6b4574d70d1f183029c243a [INFO] running `Command { std: "docker" "start" "-a" "46bac0ad58285b423fb01c647130edf704019b50e6b4574d70d1f183029c243a", kill_on_drop: false }` [INFO] [stderr] warning: function `ownership_and_copy_main` is never used [INFO] [stderr] --> src/ownership.rs:4:15 [INFO] [stderr] | [INFO] [stderr] 4 | pub(crate) fn ownership_and_copy_main() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function `takes_ownership` is never used [INFO] [stderr] --> src/ownership.rs:25:4 [INFO] [stderr] | [INFO] [stderr] 25 | fn takes_ownership(some_string: String) { // some_string comes into scope. [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `makes_copy` is never used [INFO] [stderr] --> src/ownership.rs:30:4 [INFO] [stderr] | [INFO] [stderr] 30 | fn makes_copy(some_integer: i32) { // some_integer comes into scope. [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `return_and_scope_main` is never used [INFO] [stderr] --> src/ownership.rs:38:15 [INFO] [stderr] | [INFO] [stderr] 38 | pub(crate) fn return_and_scope_main() { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `gives_ownership` is never used [INFO] [stderr] --> src/ownership.rs:54:4 [INFO] [stderr] | [INFO] [stderr] 54 | fn gives_ownership() -> String { // gives_ownership will move its [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `takes_and_gives_back` is never used [INFO] [stderr] --> src/ownership.rs:66:4 [INFO] [stderr] | [INFO] [stderr] 66 | fn takes_and_gives_back(a_string: String) -> String { // a_string comes into [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `tuple_main` is never used [INFO] [stderr] --> src/ownership.rs:75:15 [INFO] [stderr] | [INFO] [stderr] 75 | pub(crate) fn tuple_main() { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `calculate_length` is never used [INFO] [stderr] --> src/ownership.rs:83:4 [INFO] [stderr] | [INFO] [stderr] 83 | fn calculate_length(s: String) -> (String, usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: `firstrust` (bin "firstrust" test) generated 8 warnings [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/firstrust-0e6f20d6549e6446) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "46bac0ad58285b423fb01c647130edf704019b50e6b4574d70d1f183029c243a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "46bac0ad58285b423fb01c647130edf704019b50e6b4574d70d1f183029c243a", kill_on_drop: false }` [INFO] [stdout] 46bac0ad58285b423fb01c647130edf704019b50e6b4574d70d1f183029c243a