[INFO] cloning repository https://github.com/grufwub/rusty-shell
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grufwub/rusty-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrufwub%2Frusty-shell", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrufwub%2Frusty-shell'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8e1c70ae1832d2e5780461e7465a62eaa4901316
[INFO] testing grufwub/rusty-shell against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrufwub%2Frusty-shell" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grufwub/rusty-shell on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/grufwub/rusty-shell
[INFO] finished tweaking git repo https://github.com/grufwub/rusty-shell
[INFO] tweaked toml for git repo https://github.com/grufwub/rusty-shell written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/grufwub/rusty-shell already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 4aebc89fdc033024451dffda57a766dd53e1693bc32e94b751d9d66421edda54
[INFO] running `Command { std: "docker" "start" "-a" "4aebc89fdc033024451dffda57a766dd53e1693bc32e94b751d9d66421edda54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4aebc89fdc033024451dffda57a766dd53e1693bc32e94b751d9d66421edda54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aebc89fdc033024451dffda57a766dd53e1693bc32e94b751d9d66421edda54", kill_on_drop: false }`
[INFO] [stdout] 4aebc89fdc033024451dffda57a766dd53e1693bc32e94b751d9d66421edda54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8957f775cc7c3026f0b0b44665e00e872f1ff048a9a4565c369983f5603642e
[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" "f8957f775cc7c3026f0b0b44665e00e872f1ff048a9a4565c369983f5603642e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/env.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn set(&mut self, key: &str, value: &str) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_pid`
[INFO] [stdout]   --> src/env.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn set_pid(&mut self, pid: i32) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/error.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn from_str(msg: &str) -> Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `boxed_from_str`
[INFO] [stdout]   --> src/error.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn boxed_from_str(msg: &str) -> Box<Self> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUILTIN_ALIAS`
[INFO] [stdout]   --> src/shell.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const BUILTIN_ALIAS: &str = "alias";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUILTIN_HELP`
[INFO] [stdout]   --> src/shell.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const BUILTIN_HELP: &str = "";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUILTIN_TYPE`
[INFO] [stdout]   --> src/shell.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | const BUILTIN_TYPE: &str = "";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FAILED_CONTROL_CODE`
[INFO] [stdout]   --> src/shell.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const FAILED_CONTROL_CODE: &str = "\x1b";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `execute_command_background`
[INFO] [stdout]   --> src/shell.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn execute_command_background(cmd: &mut process::Command) -> ResultErr<process::Child> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_str`
[INFO] [stdout]   --> src/token.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn push_str(&mut self, s: &str) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "f8957f775cc7c3026f0b0b44665e00e872f1ff048a9a4565c369983f5603642e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8957f775cc7c3026f0b0b44665e00e872f1ff048a9a4565c369983f5603642e", kill_on_drop: false }`
[INFO] [stdout] f8957f775cc7c3026f0b0b44665e00e872f1ff048a9a4565c369983f5603642e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d2ce83d4b696b9e07b00dbc819f589cafa5d4fc9270a70e7ec1eea74756c6c5
[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" "7d2ce83d4b696b9e07b00dbc819f589cafa5d4fc9270a70e7ec1eea74756c6c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rusty-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `set`
[INFO] [stdout]   --> src/env.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn set(&mut self, key: &str, value: &str) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_pid`
[INFO] [stdout]   --> src/env.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub fn set_pid(&mut self, pid: i32) {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_str`
[INFO] [stdout]   --> src/error.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 |     fn from_str(msg: &str) -> Self {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `boxed_from_str`
[INFO] [stdout]   --> src/error.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 |     pub fn boxed_from_str(msg: &str) -> Box<Self> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUILTIN_ALIAS`
[INFO] [stdout]   --> src/shell.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | const BUILTIN_ALIAS: &str = "alias";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUILTIN_HELP`
[INFO] [stdout]   --> src/shell.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const BUILTIN_HELP: &str = "";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `BUILTIN_TYPE`
[INFO] [stdout]   --> src/shell.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | const BUILTIN_TYPE: &str = "";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `FAILED_CONTROL_CODE`
[INFO] [stdout]   --> src/shell.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const FAILED_CONTROL_CODE: &str = "\x1b";
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `execute_command_background`
[INFO] [stdout]   --> src/shell.rs:43:4
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn execute_command_background(cmd: &mut process::Command) -> ResultErr<process::Child> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push_str`
[INFO] [stdout]   --> src/token.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn push_str(&mut self, s: &str) {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "7d2ce83d4b696b9e07b00dbc819f589cafa5d4fc9270a70e7ec1eea74756c6c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d2ce83d4b696b9e07b00dbc819f589cafa5d4fc9270a70e7ec1eea74756c6c5", kill_on_drop: false }`
[INFO] [stdout] 7d2ce83d4b696b9e07b00dbc819f589cafa5d4fc9270a70e7ec1eea74756c6c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 91c846b0412e6beb098c74a4ff6f553368cd853199f35e5a610dc2237c41bd44
[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" "91c846b0412e6beb098c74a4ff6f553368cd853199f35e5a610dc2237c41bd44", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr] warning: associated function is never used: `set`
[INFO] [stderr]   --> src/env.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn set(&mut self, key: &str, value: &str) {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_pid`
[INFO] [stderr]   --> src/env.rs:57:12
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn set_pid(&mut self, pid: i32) {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_str`
[INFO] [stderr]   --> src/error.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn from_str(msg: &str) -> Self {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `boxed_from_str`
[INFO] [stderr]   --> src/error.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn boxed_from_str(msg: &str) -> Box<Self> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `BUILTIN_ALIAS`
[INFO] [stderr]   --> src/shell.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const BUILTIN_ALIAS: &str = "alias";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `BUILTIN_HELP`
[INFO] [stderr]   --> src/shell.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const BUILTIN_HELP: &str = "";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `BUILTIN_TYPE`
[INFO] [stderr]   --> src/shell.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const BUILTIN_TYPE: &str = "";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `FAILED_CONTROL_CODE`
[INFO] [stderr]   --> src/shell.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | const FAILED_CONTROL_CODE: &str = "\x1b";
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `execute_command_background`
[INFO] [stderr]   --> src/shell.rs:43:4
[INFO] [stderr]    |
[INFO] [stderr] 43 | fn execute_command_background(cmd: &mut process::Command) -> ResultErr<process::Child> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push_str`
[INFO] [stderr]   --> src/token.rs:31:12
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn push_str(&mut self, s: &str) {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rusty-391b91d590378c33
[INFO] running `Command { std: "docker" "inspect" "91c846b0412e6beb098c74a4ff6f553368cd853199f35e5a610dc2237c41bd44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91c846b0412e6beb098c74a4ff6f553368cd853199f35e5a610dc2237c41bd44", kill_on_drop: false }`
[INFO] [stdout] 91c846b0412e6beb098c74a4ff6f553368cd853199f35e5a610dc2237c41bd44