[INFO] cloning repository https://github.com/ABorse/ProgLang18
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ABorse/ProgLang18" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FABorse%2FProgLang18", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FABorse%2FProgLang18'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9bdf1dc4a524a35dff652f36037009f45d6b388c
[INFO] testing ABorse/ProgLang18 against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FABorse%2FProgLang18" "/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/ABorse/ProgLang18 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ABorse/ProgLang18
[INFO] finished tweaking git repo https://github.com/ABorse/ProgLang18
[INFO] tweaked toml for git repo https://github.com/ABorse/ProgLang18 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/ABorse/ProgLang18 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea9225d3fd09420021f5d7e8635356873f11c923309b808d4cf6bc021a5d5529
[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" "ea9225d3fd09420021f5d7e8635356873f11c923309b808d4cf6bc021a5d5529", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea9225d3fd09420021f5d7e8635356873f11c923309b808d4cf6bc021a5d5529", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea9225d3fd09420021f5d7e8635356873f11c923309b808d4cf6bc021a5d5529", kill_on_drop: false }`
[INFO] [stdout] ea9225d3fd09420021f5d7e8635356873f11c923309b808d4cf6bc021a5d5529
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 74327e046a10c063204a145ddb946da3ffbb40e529752536af4c910d180b0629
[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" "74327e046a10c063204a145ddb946da3ffbb40e529752536af4c910d180b0629", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling updated_scheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/parser.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn parse_conditional(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]   |                      ----^^^^^^
[INFO] [stdout]   |                      |
[INFO] [stdout]   |                      help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:45:19
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn parse_compound(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:86:14
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn parse(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]    |              ----^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/environment_parser.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn parse_to_environment(mut v: &mut Vec<Token>) -> Environment {
[INFO] [stdout]   |                             ----^
[INFO] [stdout]   |                             |
[INFO] [stdout]   |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/environment_parser.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut hash: HashMap<String,Expression> = HashMap::new();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "74327e046a10c063204a145ddb946da3ffbb40e529752536af4c910d180b0629", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74327e046a10c063204a145ddb946da3ffbb40e529752536af4c910d180b0629", kill_on_drop: false }`
[INFO] [stdout] 74327e046a10c063204a145ddb946da3ffbb40e529752536af4c910d180b0629
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] ae7439096fdd58e682a353c546588e9a8a7fb958d6738933c762514a0d45a8ce
[INFO] running `Command { std: "docker" "start" "-a" "ae7439096fdd58e682a353c546588e9a8a7fb958d6738933c762514a0d45a8ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling updated_scheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/parser.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn parse_conditional(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]   |                      ----^^^^^^
[INFO] [stdout]   |                      |
[INFO] [stdout]   |                      help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:45:19
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn parse_compound(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:86:14
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn parse(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]    |              ----^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/environment_parser.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn parse_to_environment(mut v: &mut Vec<Token>) -> Environment {
[INFO] [stdout]   |                             ----^
[INFO] [stdout]   |                             |
[INFO] [stdout]   |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/environment_parser.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut hash: HashMap<String,Expression> = HashMap::new();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/parser.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn parse_conditional(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]   |                      ----^^^^^^
[INFO] [stdout]   |                      |
[INFO] [stdout]   |                      help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:45:19
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn parse_compound(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]    |                   ----^^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/parser.rs:86:14
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn parse(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stdout]    |              ----^^^^^^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/environment_parser.rs:8:29
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn parse_to_environment(mut v: &mut Vec<Token>) -> Environment {
[INFO] [stdout]   |                             ----^
[INFO] [stdout]   |                             |
[INFO] [stdout]   |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/environment_parser.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut hash: HashMap<String,Expression> = HashMap::new();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> tests/test_interpreter.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.32s
[INFO] running `Command { std: "docker" "inspect" "ae7439096fdd58e682a353c546588e9a8a7fb958d6738933c762514a0d45a8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae7439096fdd58e682a353c546588e9a8a7fb958d6738933c762514a0d45a8ce", kill_on_drop: false }`
[INFO] [stdout] ae7439096fdd58e682a353c546588e9a8a7fb958d6738933c762514a0d45a8ce
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 5ab7e3485601fdf2bde864a7f12b4bc33b19e1ba4aac191136ad75cc7bbfd9b1
[INFO] running `Command { std: "docker" "start" "-a" "5ab7e3485601fdf2bde864a7f12b4bc33b19e1ba4aac191136ad75cc7bbfd9b1", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/parser.rs:8:22
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn parse_conditional(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stderr]   |                      ----^^^^^^
[INFO] [stderr]   |                      |
[INFO] [stderr]   |                      help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parser.rs:45:19
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn parse_compound(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stderr]    |                   ----^^^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parser.rs:86:14
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub fn parse(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stderr]    |              ----^^^^^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/environment_parser.rs:8:29
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn parse_to_environment(mut v: &mut Vec<Token>) -> Environment {
[INFO] [stderr]   |                             ----^
[INFO] [stderr]   |                             |
[INFO] [stderr]   |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/environment_parser.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut hash: HashMap<String,Expression> = HashMap::new();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> tests/test_interpreter.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/parser.rs:8:22
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn parse_conditional(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stderr]   |                      ----^^^^^^
[INFO] [stderr]   |                      |
[INFO] [stderr]   |                      help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parser.rs:45:19
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn parse_compound(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stderr]    |                   ----^^^^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parser.rs:86:14
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub fn parse(mut tokens: &mut Vec<Token>, environment: &Environment) -> Expression {
[INFO] [stderr]    |              ----^^^^^^
[INFO] [stderr]    |              |
[INFO] [stderr]    |              help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/environment_parser.rs:8:29
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn parse_to_environment(mut v: &mut Vec<Token>) -> Environment {
[INFO] [stderr]   |                             ----^
[INFO] [stderr]   |                             |
[INFO] [stderr]   |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/environment_parser.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut hash: HashMap<String,Expression> = HashMap::new();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/updated_scheme-bb1ae98441b09523
[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] [stderr]      Running /opt/rustwide/target/debug/deps/updated_scheme-538db1aca9562b57
[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] [stderr]      Running /opt/rustwide/target/debug/deps/test_evaluator-0b9f7492625c6f36
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_interpret_tree ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_interpreter-29ca94063bc4b856
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test test_floating_point_1 ... ok
[INFO] [stdout] test test_multiple_parens ... ok
[INFO] [stdout] test test_single_number ... ok
[INFO] [stdout] test test_negative_number ... ok
[INFO] [stdout] test test_floating_point_2 ... ok
[INFO] [stdout] test test_simple_evaluation ... ok
[INFO] [stdout] test test_with_environment_string ... ok
[INFO] [stdout] test test_with_multiple_variable_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_lexer-cd3bdc0de0ec5312
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_lexer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_predicate-efe037e1c61b811f
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test test_raw_predicate ... ok
[INFO] [stdout] test test_predicate_4 ... ok
[INFO] [stdout] test test_predicate_3 ... ok
[INFO] [stdout] test test_with_multiple_variable_string ... ok
[INFO] [stdout] test test_predicate_1 ... ok
[INFO] [stdout] test test_predicate_2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests updated_scheme
[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" "5ab7e3485601fdf2bde864a7f12b4bc33b19e1ba4aac191136ad75cc7bbfd9b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ab7e3485601fdf2bde864a7f12b4bc33b19e1ba4aac191136ad75cc7bbfd9b1", kill_on_drop: false }`
[INFO] [stdout] 5ab7e3485601fdf2bde864a7f12b4bc33b19e1ba4aac191136ad75cc7bbfd9b1
