[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 beta-2022-02-22 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoanneGeng%2Ffirstrust" "/workspace/builds/worker-90/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-90/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JoanneGeng/firstrust on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-90/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: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 10a54b0dfda16e241652e53e422ad68215edbd3054c0955849d08ce26d70ff58 [INFO] running `Command { std: "docker" "start" "-a" "10a54b0dfda16e241652e53e422ad68215edbd3054c0955849d08ce26d70ff58", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "10a54b0dfda16e241652e53e422ad68215edbd3054c0955849d08ce26d70ff58", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "10a54b0dfda16e241652e53e422ad68215edbd3054c0955849d08ce26d70ff58", kill_on_drop: false }` [INFO] [stdout] 10a54b0dfda16e241652e53e422ad68215edbd3054c0955849d08ce26d70ff58 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b3a266cbf597c04e96576d4e91c8ca9817e7ed62112fd3201a7750c1d748cefc [INFO] running `Command { std: "docker" "start" "-a" "b3a266cbf597c04e96576d4e91c8ca9817e7ed62112fd3201a7750c1d748cefc", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling firstrust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `ownership_and_copy_main` [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 is never used: `takes_ownership` [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 is never used: `makes_copy` [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 is never used: `return_and_scope_main` [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 is never used: `gives_ownership` [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 is never used: `takes_and_gives_back` [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 is never used: `tuple_main` [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 is never used: `calculate_length` [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 [unoptimized + debuginfo] target(s) in 40.15s [INFO] running `Command { std: "docker" "inspect" "b3a266cbf597c04e96576d4e91c8ca9817e7ed62112fd3201a7750c1d748cefc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b3a266cbf597c04e96576d4e91c8ca9817e7ed62112fd3201a7750c1d748cefc", kill_on_drop: false }` [INFO] [stdout] b3a266cbf597c04e96576d4e91c8ca9817e7ed62112fd3201a7750c1d748cefc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 97b1d34eb25e2450264a4354bfb870f32a5fb7cdd303247342daa8c85e0e6465 [INFO] running `Command { std: "docker" "start" "-a" "97b1d34eb25e2450264a4354bfb870f32a5fb7cdd303247342daa8c85e0e6465", kill_on_drop: false }` [INFO] [stderr] Compiling firstrust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: function is never used: `ownership_and_copy_main` [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 is never used: `takes_ownership` [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 is never used: `makes_copy` [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 is never used: `return_and_scope_main` [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 is never used: `gives_ownership` [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 is never used: `takes_and_gives_back` [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 is never used: `tuple_main` [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 is never used: `calculate_length` [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 [unoptimized + debuginfo] target(s) in 0.49s [INFO] running `Command { std: "docker" "inspect" "97b1d34eb25e2450264a4354bfb870f32a5fb7cdd303247342daa8c85e0e6465", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "97b1d34eb25e2450264a4354bfb870f32a5fb7cdd303247342daa8c85e0e6465", kill_on_drop: false }` [INFO] [stdout] 97b1d34eb25e2450264a4354bfb870f32a5fb7cdd303247342daa8c85e0e6465 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 866c360d630b8d590ac6286ee3de6d2346f0697752951a8bea1669d08c4b74c9 [INFO] running `Command { std: "docker" "start" "-a" "866c360d630b8d590ac6286ee3de6d2346f0697752951a8bea1669d08c4b74c9", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] warning: function is never used: `ownership_and_copy_main` [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 is never used: `takes_ownership` [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 is never used: `makes_copy` [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 is never used: `return_and_scope_main` [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 is never used: `gives_ownership` [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 is never used: `takes_and_gives_back` [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 is never used: `tuple_main` [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 is never used: `calculate_length` [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 [unoptimized + debuginfo] target(s) in 2.34s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/firstrust-e3934007c30fcd30) [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" "866c360d630b8d590ac6286ee3de6d2346f0697752951a8bea1669d08c4b74c9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "866c360d630b8d590ac6286ee3de6d2346f0697752951a8bea1669d08c4b74c9", kill_on_drop: false }` [INFO] [stdout] 866c360d630b8d590ac6286ee3de6d2346f0697752951a8bea1669d08c4b74c9