[INFO] cloning repository https://github.com/marior765/GC
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marior765/GC" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarior765%2FGC", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarior765%2FGC'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4c812d7af62bee730cf462b7a77cd006b38d6a5
[INFO] testing marior765/GC against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarior765%2FGC" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/marior765/GC
[INFO] finished tweaking git repo https://github.com/marior765/GC
[INFO] tweaked toml for git repo https://github.com/marior765/GC written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/marior765/GC on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/marior765/GC already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fc09fd2fe74a6fdcf0650cdd09cfbc191b33f1d281f32cd1e760106ddfa24ce
[INFO] running `Command { std: "docker" "start" "-a" "6fc09fd2fe74a6fdcf0650cdd09cfbc191b33f1d281f32cd1e760106ddfa24ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fc09fd2fe74a6fdcf0650cdd09cfbc191b33f1d281f32cd1e760106ddfa24ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fc09fd2fe74a6fdcf0650cdd09cfbc191b33f1d281f32cd1e760106ddfa24ce", kill_on_drop: false }`
[INFO] [stdout] 6fc09fd2fe74a6fdcf0650cdd09cfbc191b33f1d281f32cd1e760106ddfa24ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd63d00eab07b4285c3ca07f2e618973c8753af566bbd04e3b14be2e04a0398b
[INFO] running `Command { std: "docker" "start" "-a" "cd63d00eab07b4285c3ca07f2e618973c8753af566bbd04e3b14be2e04a0398b", kill_on_drop: false }`
[INFO] [stderr]    Compiling gc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/main.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 251 |         for j in 0..20 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/main.rs:254:13
[INFO] [stdout]     |
[INFO] [stdout] 254 |         for k in 0..20 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STACK_MAX_SIZE` is never used
[INFO] [stdout]   --> src/main.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const STACK_MAX_SIZE: usize = 256;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `StackLink` is never used
[INFO] [stdout]   --> src/main.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | type StackLink = Rc<RefCell<Vec<SingleLink>>>;
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `type_obj`, `marked`, and `next` are never read
[INFO] [stdout]   --> src/main.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Object {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 49 |     type_obj: ObjectType,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 50 |     marked: bool, // u8
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 51 |     next: SingleLink,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Object` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mark` is never used
[INFO] [stdout]    --> src/main.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout]  79 | impl VM {
[INFO] [stdout]     | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn mark(&mut self, item: &mut Object) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "cd63d00eab07b4285c3ca07f2e618973c8753af566bbd04e3b14be2e04a0398b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd63d00eab07b4285c3ca07f2e618973c8753af566bbd04e3b14be2e04a0398b", kill_on_drop: false }`
[INFO] [stdout] cd63d00eab07b4285c3ca07f2e618973c8753af566bbd04e3b14be2e04a0398b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb51679255c6d270df348ae2a3445a87111f5a247342074aa2a8729e38eff761
[INFO] running `Command { std: "docker" "start" "-a" "eb51679255c6d270df348ae2a3445a87111f5a247342074aa2a8729e38eff761", kill_on_drop: false }`
[INFO] [stderr]    Compiling gc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/main.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 251 |         for j in 0..20 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]    --> src/main.rs:254:13
[INFO] [stdout]     |
[INFO] [stdout] 254 |         for k in 0..20 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `STACK_MAX_SIZE` is never used
[INFO] [stdout]   --> src/main.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const STACK_MAX_SIZE: usize = 256;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `StackLink` is never used
[INFO] [stdout]   --> src/main.rs:17:6
[INFO] [stdout]    |
[INFO] [stdout] 17 | type StackLink = Rc<RefCell<Vec<SingleLink>>>;
[INFO] [stdout]    |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `type_obj`, `marked`, and `next` are never read
[INFO] [stdout]   --> src/main.rs:49:5
[INFO] [stdout]    |
[INFO] [stdout] 48 | struct Object {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 49 |     type_obj: ObjectType,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 50 |     marked: bool, // u8
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 51 |     next: SingleLink,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Object` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mark` is never used
[INFO] [stdout]    --> src/main.rs:105:12
[INFO] [stdout]     |
[INFO] [stdout]  79 | impl VM {
[INFO] [stdout]     | ------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn mark(&mut self, item: &mut Object) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "eb51679255c6d270df348ae2a3445a87111f5a247342074aa2a8729e38eff761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb51679255c6d270df348ae2a3445a87111f5a247342074aa2a8729e38eff761", kill_on_drop: false }`
[INFO] [stdout] eb51679255c6d270df348ae2a3445a87111f5a247342074aa2a8729e38eff761
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f1f6b6adf719f1c9d34db205404963ce6a79e685308d0a562468fa882313433f
[INFO] running `Command { std: "docker" "start" "-a" "f1f6b6adf719f1c9d34db205404963ce6a79e685308d0a562468fa882313433f", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/main.rs:251:13
[INFO] [stderr]     |
[INFO] [stderr] 251 |         for j in 0..20 {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]    --> src/main.rs:254:13
[INFO] [stderr]     |
[INFO] [stderr] 254 |         for k in 0..20 {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `STACK_MAX_SIZE` is never used
[INFO] [stderr]   --> src/main.rs:12:7
[INFO] [stderr]    |
[INFO] [stderr] 12 | const STACK_MAX_SIZE: usize = 256;
[INFO] [stderr]    |       ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `StackLink` is never used
[INFO] [stderr]   --> src/main.rs:17:6
[INFO] [stderr]    |
[INFO] [stderr] 17 | type StackLink = Rc<RefCell<Vec<SingleLink>>>;
[INFO] [stderr]    |      ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `type_obj`, `marked`, and `next` are never read
[INFO] [stderr]   --> src/main.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 48 | struct Object {
[INFO] [stderr]    |        ------ fields in this struct
[INFO] [stderr] 49 |     type_obj: ObjectType,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 50 |     marked: bool, // u8
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 51 |     next: SingleLink,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Object` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `mark` is never used
[INFO] [stderr]    --> src/main.rs:105:12
[INFO] [stderr]     |
[INFO] [stderr]  79 | impl VM {
[INFO] [stderr]     | ------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 105 |     pub fn mark(&mut self, item: &mut Object) {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `gc` (bin "gc" test) generated 6 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/gc-02b99a141c67be8e)
[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] running `Command { std: "docker" "inspect" "f1f6b6adf719f1c9d34db205404963ce6a79e685308d0a562468fa882313433f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1f6b6adf719f1c9d34db205404963ce6a79e685308d0a562468fa882313433f", kill_on_drop: false }`
[INFO] [stdout] f1f6b6adf719f1c9d34db205404963ce6a79e685308d0a562468fa882313433f