[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 }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkengorab%2Fabra-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2051abf672f95fe11b8d2e4e300b304d2be78998
[INFO] testing kengorab/abra-lang against try#ecd7b559f89c73ac8f1d318f7501006f37b944b2 for pr-112849
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkengorab%2Fabra-lang" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kengorab/abra-lang on toolchain ecd7b559f89c73ac8f1d318f7501006f37b944b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "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-5-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" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c6b83fec4ff756b9ce680b28b90bbe01d5c95739c7332e7e9eb0a709d60ed45
[INFO] running `Command { std: "docker" "start" "-a" "1c6b83fec4ff756b9ce680b28b90bbe01d5c95739c7332e7e9eb0a709d60ed45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c6b83fec4ff756b9ce680b28b90bbe01d5c95739c7332e7e9eb0a709d60ed45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c6b83fec4ff756b9ce680b28b90bbe01d5c95739c7332e7e9eb0a709d60ed45", kill_on_drop: false }`
[INFO] [stdout] 1c6b83fec4ff756b9ce680b28b90bbe01d5c95739c7332e7e9eb0a709d60ed45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d5ba32515255614bdf677ad97e3f8bf50af2192815220573027ac0aca9117c2
[INFO] running `Command { std: "docker" "start" "-a" "8d5ba32515255614bdf677ad97e3f8bf50af2192815220573027ac0aca9117c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling thread_local v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling regex-syntax v0.6.22
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.71
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling syn v0.15.31
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling futures-core v0.3.8
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling regex v1.4.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling tinyvec v1.1.0
[INFO] [stderr]    Compiling net2 v0.2.37
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling parking_lot_core v0.9.2
[INFO] [stderr]    Compiling bumpalo v3.2.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.16
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling peekmore v0.5.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling strum v0.15.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling indexmap v1.3.0
[INFO] [stderr]    Compiling form_urlencoded v1.0.0
[INFO] [stderr]    Compiling mio-uds v0.6.8
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling const-random v0.1.13
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling futures-io v0.3.8
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling inkwell v0.1.0 (https://github.com/TheDan64/inkwell?branch=master#36c3b106)
[INFO] [stderr]    Compiling wasm-bindgen v0.2.71
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling llvm-sys v110.0.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.71
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.11
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling strum_macros v0.15.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling dashmap v3.11.10
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.71
[INFO] [stderr]    Compiling nix v0.22.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling fd-lock v3.0.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling cty v0.2.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling utf8parse v0.2.0
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling dirs v3.0.2
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling rustversion v1.0.1
[INFO] [stderr]    Compiling abra_native v0.0.1 (/opt/rustwide/workdir/abra_native)
[INFO] [stderr]    Compiling pin-project-internal v1.0.3
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling proc-macro-error v0.4.4
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.3
[INFO] [stderr]    Compiling serde_repr v0.1.6
[INFO] [stderr]    Compiling pin-project v1.0.3
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.71
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling inkwell_internals v0.5.0 (https://github.com/TheDan64/inkwell?branch=master#36c3b106)
[INFO] [stderr]    Compiling clap_derive v0.3.0 (https://github.com/clap-rs/clap_derive#0352bb30)
[INFO] [stderr]    Compiling auto_impl v0.4.1
[INFO] [stderr]    Compiling abra_core v0.5.7 (/opt/rustwide/workdir/abra_core)
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling tower-lsp-macros v0.3.0
[INFO] [stderr]    Compiling clap v3.0.0-beta.1 (https://github.com/clap-rs/clap#af454200)
[INFO] [stderr]    Compiling rustyline v9.0.0
[INFO] [stderr]    Compiling futures v0.3.6
[INFO] [stderr]    Compiling rustyline-derive v0.5.0
[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] [stderr]    Compiling abra_llvm v0.1.0 (/opt/rustwide/workdir/abra_llvm)
[INFO] [stderr]    Compiling url v2.2.0
[INFO] [stderr]    Compiling lsp-types v0.81.0
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling abra v0.2.1 (/opt/rustwide/workdir/abra_cli)
[INFO] [stderr]    Compiling js-sys v0.3.48
[INFO] [stderr]    Compiling abra_wasm v0.8.1 (/opt/rustwide/workdir/abra_wasm)
[INFO] [stderr]    Compiling tower-lsp v0.13.3
[INFO] [stderr]    Compiling abra-lsp v0.0.4 (/opt/rustwide/workdir/abra_lsp)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.50s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v5.1.2
[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" "8d5ba32515255614bdf677ad97e3f8bf50af2192815220573027ac0aca9117c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d5ba32515255614bdf677ad97e3f8bf50af2192815220573027ac0aca9117c2", kill_on_drop: false }`
[INFO] [stdout] 8d5ba32515255614bdf677ad97e3f8bf50af2192815220573027ac0aca9117c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+ecd7b559f89c73ac8f1d318f7501006f37b944b2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6440c3d9cc1d8f57d03188227ad0c6f8ad5ae0e53f12c90f42eee96452b31ffe
[INFO] running `Command { std: "docker" "start" "-a" "6440c3d9cc1d8f57d03188227ad0c6f8ad5ae0e53f12c90f42eee96452b31ffe", kill_on_drop: false }`
[INFO] [stderr]    Compiling abra_native v0.0.1 (/opt/rustwide/workdir/abra_native)
[INFO] [stderr]    Compiling abra_core v0.5.7 (/opt/rustwide/workdir/abra_core)
[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] [stderr]    Compiling abra_llvm v0.1.0 (/opt/rustwide/workdir/abra_llvm)
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling abra_wasm v0.8.1 (/opt/rustwide/workdir/abra_wasm)
[INFO] [stderr]    Compiling abra v0.2.1 (/opt/rustwide/workdir/abra_cli)
[INFO] [stderr]    Compiling abra-lsp v0.0.4 (/opt/rustwide/workdir/abra_lsp)
[INFO] [stderr] error: could not compile `abra_core` (lib test); 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/ecd7b559f89c73ac8f1d318f7501006f37b944b2/bin/rustc --crate-name abra_core --edition=2018 abra_core/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 --test -C metadata=f1c72f6251294e5d -C extra-filename=-f1c72f6251294e5d --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern abra_native=/opt/rustwide/target/debug/deps/libabra_native-5e551355c90235b6.so --extern downcast_rs=/opt/rustwide/target/debug/deps/libdowncast_rs-3787d968a374cd16.rlib --extern itertools=/opt/rustwide/target/debug/deps/libitertools-932c90b324d05e2d.rlib --extern peekmore=/opt/rustwide/target/debug/deps/libpeekmore-d5a815647eb32a0d.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-c93e4c1f09e1736b.rlib --extern strum=/opt/rustwide/target/debug/deps/libstrum-e6e1e8ec3de15cbc.rlib --extern strum_macros=/opt/rustwide/target/debug/deps/libstrum_macros-4e3b8ddeaacb0789.so --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6440c3d9cc1d8f57d03188227ad0c6f8ad5ae0e53f12c90f42eee96452b31ffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6440c3d9cc1d8f57d03188227ad0c6f8ad5ae0e53f12c90f42eee96452b31ffe", kill_on_drop: false }`
[INFO] [stdout] 6440c3d9cc1d8f57d03188227ad0c6f8ad5ae0e53f12c90f42eee96452b31ffe