[INFO] cloning repository https://github.com/Nickforall/yukon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nickforall/yukon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickforall%2Fyukon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickforall%2Fyukon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b310c92cedf77b95fe66c2792fb3a280ee00f605
[INFO] checking Nickforall/yukon against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNickforall%2Fyukon" "/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/Nickforall/yukon on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nickforall/yukon
[INFO] finished tweaking git repo https://github.com/Nickforall/yukon
[INFO] tweaked toml for git repo https://github.com/Nickforall/yukon written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Nickforall/yukon already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v0.7.4
[INFO] [stderr]   Downloaded estree v0.0.5
[INFO] [stderr]   Downloaded esprit v0.0.5
[INFO] [stderr]   Downloaded unjson v0.0.5
[INFO] [stderr]   Downloaded encode_unicode v0.1.3
[INFO] [stderr]   Downloaded joker v0.0.5
[INFO] [stderr]   Downloaded num-traits v0.1.39
[INFO] [stderr]   Downloaded rustyline v1.0.0
[INFO] [stderr]   Downloaded easter v0.0.5
[INFO] [stderr]   Downloaded libc v0.2.26
[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" "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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4791774aa5f36c5b7bbc7e53386b3a65116fac24e0467690f46a08eb95ba7594
[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" "4791774aa5f36c5b7bbc7e53386b3a65116fac24e0467690f46a08eb95ba7594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4791774aa5f36c5b7bbc7e53386b3a65116fac24e0467690f46a08eb95ba7594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4791774aa5f36c5b7bbc7e53386b3a65116fac24e0467690f46a08eb95ba7594", kill_on_drop: false }`
[INFO] [stdout] 4791774aa5f36c5b7bbc7e53386b3a65116fac24e0467690f46a08eb95ba7594
[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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--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] c3ebce4b82221428a4a2dbfd764be164db925b4906b52eda9def29db48ab93c4
[INFO] running `Command { std: "docker" "start" "-a" "c3ebce4b82221428a4a2dbfd764be164db925b4906b52eda9def29db48ab93c4", kill_on_drop: false }`
[INFO] [stderr]     Checking itoa v0.1.1
[INFO] [stderr]     Checking num-traits v0.1.39
[INFO] [stderr]     Checking serde v0.7.15
[INFO] [stderr]    Compiling esprit v0.0.5
[INFO] [stderr]     Checking libc v0.2.26
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking serde_json v0.7.4
[INFO] [stderr]     Checking unjson v0.0.5
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking joker v0.0.5
[INFO] [stderr]     Checking easter v0.0.5
[INFO] [stderr]     Checking estree v0.0.5
[INFO] [stderr]     Checking Yukon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std`
[INFO] [stdout]  --> src/vm/scope.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustyline::error::ReadlineError`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use rustyline::error::ReadlineError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rustyline::Editor`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use rustyline::Editor;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ansi_term::Colour::RGB`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use ansi_term::Colour::RGB;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std`
[INFO] [stdout]  --> src/vm/scope.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std;
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image`
[INFO] [stdout]   --> src/bytecode.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn compile_decl(image: &mut Image, decl: easter::decl::Decl) {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_image`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decl`
[INFO] [stdout]   --> src/bytecode.rs:83:36
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn compile_decl(image: &mut Image, decl: easter::decl::Decl) {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_decl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> src/vm/scope.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(id: i32, parent: i32) {
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/vm/scope.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(id: i32, parent: i32) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `JsNull`
[INFO] [stdout]   --> src/vm/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     JsNull,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Yukon` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `yukon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `boolValue` should have a snake case name
[INFO] [stdout]   --> src/vm/operations.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn handle_eq_with_bool(boolValue: &JsValue, comparedValue: &JsValue) -> JsValue {
[INFO] [stdout]    |                        ^^^^^^^^^ help: convert the identifier to snake case: `bool_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `comparedValue` should have a snake case name
[INFO] [stdout]   --> src/vm/operations.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn handle_eq_with_bool(boolValue: &JsValue, comparedValue: &JsValue) -> JsValue {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^ help: convert the identifier to snake case: `compared_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image`
[INFO] [stdout]   --> src/bytecode.rs:83:17
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn compile_decl(image: &mut Image, decl: easter::decl::Decl) {
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_image`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decl`
[INFO] [stdout]   --> src/bytecode.rs:83:36
[INFO] [stdout]    |
[INFO] [stdout] 83 | fn compile_decl(image: &mut Image, decl: easter::decl::Decl) {
[INFO] [stdout]    |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_decl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `image`
[INFO] [stdout]   --> src/tests.rs:51:13
[INFO] [stdout]    |
[INFO] [stdout] 51 |         let image: Image;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_image`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent`
[INFO] [stdout]   --> src/vm/scope.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(id: i32, parent: i32) {
[INFO] [stdout]    |                         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ret_value_fmt`
[INFO] [stdout]  --> src/vm/repl.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub fn ret_value_fmt(val: &JsValue) -> String {
[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: `new`
[INFO] [stdout]   --> src/vm/scope.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn new(id: i32, parent: i32) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `JsNull`
[INFO] [stdout]   --> src/vm/mod.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     JsNull,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Yukon` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `yukon`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `boolValue` should have a snake case name
[INFO] [stdout]   --> src/vm/operations.rs:52:24
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn handle_eq_with_bool(boolValue: &JsValue, comparedValue: &JsValue) -> JsValue {
[INFO] [stdout]    |                        ^^^^^^^^^ help: convert the identifier to snake case: `bool_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `comparedValue` should have a snake case name
[INFO] [stdout]   --> src/vm/operations.rs:52:45
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn handle_eq_with_bool(boolValue: &JsValue, comparedValue: &JsValue) -> JsValue {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^ help: convert the identifier to snake case: `compared_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.45s
[INFO] running `Command { std: "docker" "inspect" "c3ebce4b82221428a4a2dbfd764be164db925b4906b52eda9def29db48ab93c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3ebce4b82221428a4a2dbfd764be164db925b4906b52eda9def29db48ab93c4", kill_on_drop: false }`
[INFO] [stdout] c3ebce4b82221428a4a2dbfd764be164db925b4906b52eda9def29db48ab93c4