[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-2020-07-24 for beta-1.46-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoanneGeng%2Ffirstrust" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JoanneGeng/firstrust on toolchain beta-2020-07-24 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", 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-9/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-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 73ea7ea068ddd2ca25f9ff84b2b74207cc36802fa2c2db15d86c44e8e5633271 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "73ea7ea068ddd2ca25f9ff84b2b74207cc36802fa2c2db15d86c44e8e5633271", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "73ea7ea068ddd2ca25f9ff84b2b74207cc36802fa2c2db15d86c44e8e5633271", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "73ea7ea068ddd2ca25f9ff84b2b74207cc36802fa2c2db15d86c44e8e5633271", kill_on_drop: false }` [INFO] [stdout] 73ea7ea068ddd2ca25f9ff84b2b74207cc36802fa2c2db15d86c44e8e5633271 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 902bac4c8b4f2f0cff90a27bfb6603d5d0e429dbc616414219d289487842da43 [INFO] running `Command { std: "docker" "start" "-a" "902bac4c8b4f2f0cff90a27bfb6603d5d0e429dbc616414219d289487842da43", 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 dev [unoptimized + debuginfo] target(s) in 0.73s [INFO] running `Command { std: "docker" "inspect" "902bac4c8b4f2f0cff90a27bfb6603d5d0e429dbc616414219d289487842da43", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "902bac4c8b4f2f0cff90a27bfb6603d5d0e429dbc616414219d289487842da43", kill_on_drop: false }` [INFO] [stdout] 902bac4c8b4f2f0cff90a27bfb6603d5d0e429dbc616414219d289487842da43 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 651b4a6a8b258d780a955feb9800ac24610d179e986b342fe152e6785b38c3df [INFO] running `Command { std: "docker" "start" "-a" "651b4a6a8b258d780a955feb9800ac24610d179e986b342fe152e6785b38c3df", 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 0.53s [INFO] running `Command { std: "docker" "inspect" "651b4a6a8b258d780a955feb9800ac24610d179e986b342fe152e6785b38c3df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "651b4a6a8b258d780a955feb9800ac24610d179e986b342fe152e6785b38c3df", kill_on_drop: false }` [INFO] [stdout] 651b4a6a8b258d780a955feb9800ac24610d179e986b342fe152e6785b38c3df [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] d46a96a3161ebbc10cb362db97a602baa9ca60bcc22488995d193bfa56e893ad [INFO] running `Command { std: "docker" "start" "-a" "d46a96a3161ebbc10cb362db97a602baa9ca60bcc22488995d193bfa56e893ad", kill_on_drop: false }` [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: 8 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/firstrust-7ff4ed525d7691c9 [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 [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "d46a96a3161ebbc10cb362db97a602baa9ca60bcc22488995d193bfa56e893ad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d46a96a3161ebbc10cb362db97a602baa9ca60bcc22488995d193bfa56e893ad", kill_on_drop: false }` [INFO] [stdout] d46a96a3161ebbc10cb362db97a602baa9ca60bcc22488995d193bfa56e893ad