[INFO] cloning repository https://github.com/chris-oo/crafting-interpreters-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chris-oo/crafting-interpreters-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchris-oo%2Fcrafting-interpreters-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchris-oo%2Fcrafting-interpreters-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0358390d2d6489a9203e2bc16403bcb602c7a5cb
[INFO] testing chris-oo/crafting-interpreters-rust against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchris-oo%2Fcrafting-interpreters-rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chris-oo/crafting-interpreters-rust on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/chris-oo/crafting-interpreters-rust
[INFO] finished tweaking git repo https://github.com/chris-oo/crafting-interpreters-rust
[INFO] tweaked toml for git repo https://github.com/chris-oo/crafting-interpreters-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/chris-oo/crafting-interpreters-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 701e3dc70be01fd7fde49a720407d9179df2d84525bd8dc4ac4da633317527eb
[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" "701e3dc70be01fd7fde49a720407d9179df2d84525bd8dc4ac4da633317527eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "701e3dc70be01fd7fde49a720407d9179df2d84525bd8dc4ac4da633317527eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "701e3dc70be01fd7fde49a720407d9179df2d84525bd8dc4ac4da633317527eb", kill_on_drop: false }`
[INFO] [stdout] 701e3dc70be01fd7fde49a720407d9179df2d84525bd8dc4ac4da633317527eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.49.0" "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] f215c373d05568fac34fc606e73f8778c250853d299b4410b3478b1574ae9428
[INFO] running `Command { std: "docker" "start" "-a" "f215c373d05568fac34fc606e73f8778c250853d299b4410b3478b1574ae9428", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling totems v0.2.7
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling num-derive v0.3.0
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:265:26
[INFO] [stdout]     |
[INFO] [stdout] 265 |     fn number(&mut self, can_assign: bool) {
[INFO] [stdout]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:272:26
[INFO] [stdout]     |
[INFO] [stdout] 272 |     fn string(&mut self, can_assign: bool) {
[INFO] [stdout]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:315:28
[INFO] [stdout]     |
[INFO] [stdout] 315 |     fn grouping(&mut self, can_assign: bool) {
[INFO] [stdout]     |                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:320:25
[INFO] [stdout]     |
[INFO] [stdout] 320 |     fn unary(&mut self, can_assign: bool) {
[INFO] [stdout]     |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:376:26
[INFO] [stdout]     |
[INFO] [stdout] 376 |     fn binary(&mut self, can_assign: bool) {
[INFO] [stdout]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:400:27
[INFO] [stdout]     |
[INFO] [stdout] 400 |     fn literal(&mut self, can_assign: bool) {
[INFO] [stdout]     |                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]   --> src/chunk.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn reset(&mut self) {
[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: `remove_string`
[INFO] [stdout]    --> src/lox_string_table.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn remove_string(&mut self, string: &LoxString) {
[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 28.12s
[INFO] running `Command { std: "docker" "inspect" "f215c373d05568fac34fc606e73f8778c250853d299b4410b3478b1574ae9428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f215c373d05568fac34fc606e73f8778c250853d299b4410b3478b1574ae9428", kill_on_drop: false }`
[INFO] [stdout] f215c373d05568fac34fc606e73f8778c250853d299b4410b3478b1574ae9428
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c77348da9ef688062f05f0584e2b9e77724fa7c9236f61f42c471d6f24d00927
[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" "c77348da9ef688062f05f0584e2b9e77724fa7c9236f61f42c471d6f24d00927", kill_on_drop: false }`
[INFO] [stderr]    Compiling rlox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:265:26
[INFO] [stdout]     |
[INFO] [stdout] 265 |     fn number(&mut self, can_assign: bool) {
[INFO] [stdout]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:272:26
[INFO] [stdout]     |
[INFO] [stdout] 272 |     fn string(&mut self, can_assign: bool) {
[INFO] [stdout]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:315:28
[INFO] [stdout]     |
[INFO] [stdout] 315 |     fn grouping(&mut self, can_assign: bool) {
[INFO] [stdout]     |                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:320:25
[INFO] [stdout]     |
[INFO] [stdout] 320 |     fn unary(&mut self, can_assign: bool) {
[INFO] [stdout]     |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:376:26
[INFO] [stdout]     |
[INFO] [stdout] 376 |     fn binary(&mut self, can_assign: bool) {
[INFO] [stdout]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `can_assign`
[INFO] [stdout]    --> src/compiler.rs:400:27
[INFO] [stdout]     |
[INFO] [stdout] 400 |     fn literal(&mut self, can_assign: bool) {
[INFO] [stdout]     |                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `reset`
[INFO] [stdout]   --> src/chunk.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn reset(&mut self) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_check_keyword`
[INFO] [stdout]    --> src/scanner.rs:491:8
[INFO] [stdout]     |
[INFO] [stdout] 491 |     fn test_check_keyword() {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `keywords_test`
[INFO] [stdout]    --> src/scanner.rs:519:8
[INFO] [stdout]     |
[INFO] [stdout] 519 |     fn keywords_test() {}
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.20s
[INFO] running `Command { std: "docker" "inspect" "c77348da9ef688062f05f0584e2b9e77724fa7c9236f61f42c471d6f24d00927", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c77348da9ef688062f05f0584e2b9e77724fa7c9236f61f42c471d6f24d00927", kill_on_drop: false }`
[INFO] [stdout] c77348da9ef688062f05f0584e2b9e77724fa7c9236f61f42c471d6f24d00927
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 172a7da368f7bb4aad53b31b67898f920f45d03b1cd687dde0308036c38dbd64
[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" "172a7da368f7bb4aad53b31b67898f920f45d03b1cd687dde0308036c38dbd64", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused variable: `can_assign`
[INFO] [stderr]    --> src/compiler.rs:265:26
[INFO] [stderr]     |
[INFO] [stderr] 265 |     fn number(&mut self, can_assign: bool) {
[INFO] [stderr]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `can_assign`
[INFO] [stderr]    --> src/compiler.rs:272:26
[INFO] [stderr]     |
[INFO] [stderr] 272 |     fn string(&mut self, can_assign: bool) {
[INFO] [stderr]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `can_assign`
[INFO] [stderr]    --> src/compiler.rs:315:28
[INFO] [stderr]     |
[INFO] [stderr] 315 |     fn grouping(&mut self, can_assign: bool) {
[INFO] [stderr]     |                            ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `can_assign`
[INFO] [stderr]    --> src/compiler.rs:320:25
[INFO] [stderr]     |
[INFO] [stderr] 320 |     fn unary(&mut self, can_assign: bool) {
[INFO] [stderr]     |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `can_assign`
[INFO] [stderr]    --> src/compiler.rs:376:26
[INFO] [stderr]     |
[INFO] [stderr] 376 |     fn binary(&mut self, can_assign: bool) {
[INFO] [stderr]     |                          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `can_assign`
[INFO] [stderr]    --> src/compiler.rs:400:27
[INFO] [stderr]     |
[INFO] [stderr] 400 |     fn literal(&mut self, can_assign: bool) {
[INFO] [stderr]     |                           ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_can_assign`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `reset`
[INFO] [stderr]   --> src/chunk.rs:26:12
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn reset(&mut self) {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `test_check_keyword`
[INFO] [stderr]    --> src/scanner.rs:491:8
[INFO] [stderr]     |
[INFO] [stderr] 491 |     fn test_check_keyword() {}
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `keywords_test`
[INFO] [stderr]    --> src/scanner.rs:519:8
[INFO] [stderr]     |
[INFO] [stderr] 519 |     fn keywords_test() {}
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rlox-8f65c6f9601d5bfb
[INFO] [stdout] running 7 tests
[INFO] [stdout] test lox_string_table::tests::concatenate_test ... ok
[INFO] [stdout] test lox_string_table::tests::test_remove ... ok
[INFO] [stdout] test scanner::tests::simple_test ... ok
[INFO] [stdout] test scanner::tests::skip_whitespace_test ... ok
[INFO] [stdout] test lox_string_table::tests::box_allocate ... ok
[INFO] [stdout] test lox_string_table::tests::basic_test ... ok
[INFO] [stdout] test scanner::tests::peek_next_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "172a7da368f7bb4aad53b31b67898f920f45d03b1cd687dde0308036c38dbd64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "172a7da368f7bb4aad53b31b67898f920f45d03b1cd687dde0308036c38dbd64", kill_on_drop: false }`
[INFO] [stdout] 172a7da368f7bb4aad53b31b67898f920f45d03b1cd687dde0308036c38dbd64