[INFO] cloning repository https://github.com/kengorab/abra-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kengorab/abra-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkengorab%2Fabra-lang", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b82acb5a4a693622141455e23649201aa67df333
[INFO] checking kengorab/abra-lang against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkengorab%2Fabra-lang" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
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[INFO] validating manifest of git repo https://github.com/kengorab/abra-lang on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
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[INFO] tweaked toml for git repo https://github.com/kengorab/abra-lang written to /workspace/builds/worker-2-tc1/source/Cargo.toml
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[INFO] [stderr]    Compiling abra_native v0.0.1 (/opt/rustwide/workdir/abra_native)
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling rustversion v1.0.1
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[INFO] [stderr]    Compiling inkwell_internals v0.5.0 (https://github.com/TheDan64/inkwell?branch=master#36c3b106)
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.71
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]    Compiling clap_derive v0.3.0 (https://github.com/clap-rs/clap_derive#0352bb30)
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[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking abra_core v0.5.7 (/opt/rustwide/workdir/abra_core)
[INFO] [stderr]    Compiling auto_impl v0.4.1
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]     Checking clap v3.0.0-beta.1 (https://github.com/clap-rs/clap#af454200)
[INFO] [stderr]     Checking rustyline v9.0.0
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[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> abra_core/src/vm/compiler.rs:406:13
[INFO] [stdout]     |
[INFO] [stdout] 406 |         let mut scope = self.scopes.last_mut().unwrap();
[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: unused return value of `finish` that must be used
[INFO] [stdout]   --> abra_core/src/vm/value.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         hasher.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let _ = hasher.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `finish` that must be used
[INFO] [stdout]   --> abra_core/src/vm/value.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         hasher.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let _ = hasher.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `finish` that must be used
[INFO] [stdout]    --> abra_core/src/vm/value.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |         hasher.finish();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 307 |         let _ = hasher.finish();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking abra_llvm v0.1.0 (/opt/rustwide/workdir/abra_llvm)
[INFO] [stderr]     Checking selfhost_test v0.1.0 (/opt/rustwide/workdir/selfhost_test)
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking abra v0.2.1 (/opt/rustwide/workdir/abra_cli)
[INFO] [stderr]     Checking lsp-types v0.81.0
[INFO] [stderr]     Checking js-sys v0.3.48
[INFO] [stderr]     Checking abra_wasm v0.8.1 (/opt/rustwide/workdir/abra_wasm)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> abra_core/src/vm/compiler.rs:406:13
[INFO] [stdout]     |
[INFO] [stdout] 406 |         let mut scope = self.scopes.last_mut().unwrap();
[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: unused return value of `finish` that must be used
[INFO] [stdout]   --> abra_core/src/vm/value.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         hasher.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let _ = hasher.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `finish` that must be used
[INFO] [stdout]   --> abra_core/src/vm/value.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         hasher.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let _ = hasher.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `finish` that must be used
[INFO] [stdout]    --> abra_core/src/vm/value.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |         hasher.finish();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 307 |         let _ = hasher.finish();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tower-lsp v0.13.3
[INFO] [stderr]     Checking abra-lsp v0.0.4 (/opt/rustwide/workdir/abra_lsp)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 49s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2, wasm-bindgen v0.2.71
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "6e6d36d2770e120dbd6a0fd453406dd2c41c623ec1690a222c932094dbe57133", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e6d36d2770e120dbd6a0fd453406dd2c41c623ec1690a222c932094dbe57133", kill_on_drop: false }`
[INFO] [stdout] 6e6d36d2770e120dbd6a0fd453406dd2c41c623ec1690a222c932094dbe57133
[INFO] checking kengorab/abra-lang against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkengorab%2Fabra-lang" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kengorab/abra-lang on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kengorab/abra-lang
[INFO] finished tweaking git repo https://github.com/kengorab/abra-lang
[INFO] tweaked toml for git repo https://github.com/kengorab/abra-lang written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kengorab/abra-lang 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b1de19405483af08beb174fd38872cc3065f48d0044a901f06741a2772ddd1fe
[INFO] running `Command { std: "docker" "start" "-a" "b1de19405483af08beb174fd38872cc3065f48d0044a901f06741a2772ddd1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b1de19405483af08beb174fd38872cc3065f48d0044a901f06741a2772ddd1fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1de19405483af08beb174fd38872cc3065f48d0044a901f06741a2772ddd1fe", kill_on_drop: false }`
[INFO] [stdout] b1de19405483af08beb174fd38872cc3065f48d0044a901f06741a2772ddd1fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19f41b710ff992285fd2c1b216fe2e522392e0a1b94a9a65ab06fb5fd71cd2c5
[INFO] running `Command { std: "docker" "start" "-a" "19f41b710ff992285fd2c1b216fe2e522392e0a1b94a9a65ab06fb5fd71cd2c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
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[INFO] [stderr]    Compiling syn v0.15.31
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
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[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.71
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[INFO] [stderr]    Compiling proc-macro-error v1.0.4
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[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling const-random-macro v0.1.13
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[INFO] [stderr]     Checking predicates v3.0.3
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[INFO] [stderr]    Compiling abra_native v0.0.1 (/opt/rustwide/workdir/abra_native)
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling rustversion v1.0.1
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[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
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[INFO] [stderr]    Compiling tokio-macros v0.2.6
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[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.71
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking abra_core v0.5.7 (/opt/rustwide/workdir/abra_core)
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]    Compiling clap_derive v0.3.0 (https://github.com/clap-rs/clap_derive#0352bb30)
[INFO] [stderr]    Compiling tower-lsp-macros v0.3.0
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling auto_impl v0.4.1
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking clap v3.0.0-beta.1 (https://github.com/clap-rs/clap#af454200)
[INFO] [stderr]     Checking rustyline v9.0.0
[INFO] [stderr]    Compiling rustyline-derive v0.5.0
[INFO] [stderr]     Checking futures v0.3.6
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> abra_core/src/vm/compiler.rs:406:13
[INFO] [stdout]     |
[INFO] [stdout] 406 |         let mut scope = self.scopes.last_mut().unwrap();
[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: unused return value of `finish` that must be used
[INFO] [stdout]   --> abra_core/src/vm/value.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         hasher.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let _ = hasher.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `finish` that must be used
[INFO] [stdout]   --> abra_core/src/vm/value.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         hasher.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let _ = hasher.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `finish` that must be used
[INFO] [stdout]    --> abra_core/src/vm/value.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |         hasher.finish();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 307 |         let _ = hasher.finish();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking abra_llvm v0.1.0 (/opt/rustwide/workdir/abra_llvm)
[INFO] [stderr]     Checking selfhost_test v0.1.0 (/opt/rustwide/workdir/selfhost_test)
[INFO] [stderr]     Checking lsp-types v0.81.0
[INFO] [stderr]     Checking js-sys v0.3.48
[INFO] [stderr]     Checking abra v0.2.1 (/opt/rustwide/workdir/abra_cli)
[INFO] [stderr]     Checking abra_wasm v0.8.1 (/opt/rustwide/workdir/abra_wasm)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> abra_core/src/vm/compiler.rs:406:13
[INFO] [stdout]     |
[INFO] [stdout] 406 |         let mut scope = self.scopes.last_mut().unwrap();
[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: unused return value of `finish` that must be used
[INFO] [stdout]   --> abra_core/src/vm/value.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |         hasher.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 28 |         let _ = hasher.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `finish` that must be used
[INFO] [stdout]   --> abra_core/src/vm/value.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         hasher.finish();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let _ = hasher.finish();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `finish` that must be used
[INFO] [stdout]    --> abra_core/src/vm/value.rs:307:9
[INFO] [stdout]     |
[INFO] [stdout] 307 |         hasher.finish();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 307 |         let _ = hasher.finish();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking tower-lsp v0.13.3
[INFO] [stderr]     Checking abra-lsp v0.0.4 (/opt/rustwide/workdir/abra_lsp)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 35s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2, wasm-bindgen v0.2.71
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "19f41b710ff992285fd2c1b216fe2e522392e0a1b94a9a65ab06fb5fd71cd2c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19f41b710ff992285fd2c1b216fe2e522392e0a1b94a9a65ab06fb5fd71cd2c5", kill_on_drop: false }`
[INFO] [stdout] 19f41b710ff992285fd2c1b216fe2e522392e0a1b94a9a65ab06fb5fd71cd2c5