[INFO] cloning repository https://github.com/tweag/tf-ncl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tweag/tf-ncl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweag%2Ftf-ncl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweag%2Ftf-ncl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 481aeac9f92eb0aef1b92eeaea84778d2cce9ea3
[INFO] checking tweag/tf-ncl against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweag%2Ftf-ncl" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tweag/tf-ncl on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tweag/tf-ncl
[INFO] finished tweaking git repo https://github.com/tweag/tf-ncl
[INFO] tweaked toml for git repo https://github.com/tweag/tf-ncl written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tweag/tf-ncl 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/tweag/nickel`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "4c6b73a1d7265ce8381c0efb28322506fbeb9dd735977870082539951851c830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c6b73a1d7265ce8381c0efb28322506fbeb9dd735977870082539951851c830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c6b73a1d7265ce8381c0efb28322506fbeb9dd735977870082539951851c830", kill_on_drop: false }`
[INFO] [stdout] 4c6b73a1d7265ce8381c0efb28322506fbeb9dd735977870082539951851c830
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "3861d055921007157af2fb2e6fa2e1e6265923e661ad1a939ae3f8455abf0d20", kill_on_drop: false }`
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[INFO] [stderr]     Checking serde-wasm-bindgen v0.5.0
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[INFO] [stderr]     Checking ansi_term v0.12.1
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[INFO] [stderr]     Checking comrak v0.17.1
[INFO] [stderr]     Checking malachite-nz v0.3.2
[INFO] [stderr]    Compiling nickel-lang-core v0.1.0 (https://github.com/tweag/nickel#0f02aa14)
[INFO] [stderr]     Checking malachite-q v0.3.2
[INFO] [stderr]     Checking malachite v0.3.2
[INFO] [stderr]     Checking tf-ncl v0.1.0 (/opt/rustwide/workdir/tf-ncl)
[INFO] [stdout] warning: the item `build_record` is imported redundantly
[INFO] [stdout]    --> tf-ncl/src/nickel_builder.rs:325:25
[INFO] [stdout]     |
[INFO] [stdout] 325 |         parser::utils::{build_record, FieldPathElem},
[INFO] [stdout]     |                         ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 332 |     use super::*;
[INFO] [stdout]     |         -------- the item `build_record` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FieldPathElem` is imported redundantly
[INFO] [stdout]    --> tf-ncl/src/nickel_builder.rs:325:39
[INFO] [stdout]     |
[INFO] [stdout] 325 |         parser::utils::{build_record, FieldPathElem},
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 332 |     use super::*;
[INFO] [stdout]     |         -------- the item `FieldPathElem` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RichTerm` is imported redundantly
[INFO] [stdout]    --> tf-ncl/src/nickel_builder.rs:326:16
[INFO] [stdout]     |
[INFO] [stdout] 326 |         term::{RichTerm, TypeAnnotation},
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 332 |     use super::*;
[INFO] [stdout]     |         -------- the item `RichTerm` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TypeF` is imported redundantly
[INFO] [stdout]    --> tf-ncl/src/nickel_builder.rs:327:21
[INFO] [stdout]     |
[INFO] [stdout] 327 |         typ::{Type, TypeF},
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 332 |     use super::*;
[INFO] [stdout]     |         -------- the item `TypeF` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 00s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.84
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "3861d055921007157af2fb2e6fa2e1e6265923e661ad1a939ae3f8455abf0d20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3861d055921007157af2fb2e6fa2e1e6265923e661ad1a939ae3f8455abf0d20", kill_on_drop: false }`
[INFO] [stdout] 3861d055921007157af2fb2e6fa2e1e6265923e661ad1a939ae3f8455abf0d20
[INFO] checking tweag/tf-ncl against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftweag%2Ftf-ncl" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tweag/tf-ncl on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tweag/tf-ncl
[INFO] finished tweaking git repo https://github.com/tweag/tf-ncl
[INFO] tweaked toml for git repo https://github.com/tweag/tf-ncl written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tweag/tf-ncl 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "4c18ae2c0624a6f9edd2c3e32bfff5184d4bbb66bfa7319e6a5188b9499e482b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c18ae2c0624a6f9edd2c3e32bfff5184d4bbb66bfa7319e6a5188b9499e482b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c18ae2c0624a6f9edd2c3e32bfff5184d4bbb66bfa7319e6a5188b9499e482b", kill_on_drop: false }`
[INFO] [stdout] 4c18ae2c0624a6f9edd2c3e32bfff5184d4bbb66bfa7319e6a5188b9499e482b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "25e0a666c6e709a79c74e0b86eadccca2740cb70ea165c758ec2bf6805cabf74", kill_on_drop: false }`
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[INFO] [stdout] warning: the item `build_record` is imported redundantly
[INFO] [stdout]    --> tf-ncl/src/nickel_builder.rs:325:25
[INFO] [stdout]     |
[INFO] [stdout] 325 |         parser::utils::{build_record, FieldPathElem},
[INFO] [stdout]     |                         ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 332 |     use super::*;
[INFO] [stdout]     |         -------- the item `build_record` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FieldPathElem` is imported redundantly
[INFO] [stdout]    --> tf-ncl/src/nickel_builder.rs:325:39
[INFO] [stdout]     |
[INFO] [stdout] 325 |         parser::utils::{build_record, FieldPathElem},
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 332 |     use super::*;
[INFO] [stdout]     |         -------- the item `FieldPathElem` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `RichTerm` is imported redundantly
[INFO] [stdout]    --> tf-ncl/src/nickel_builder.rs:326:16
[INFO] [stdout]     |
[INFO] [stdout] 326 |         term::{RichTerm, TypeAnnotation},
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 332 |     use super::*;
[INFO] [stdout]     |         -------- the item `RichTerm` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TypeF` is imported redundantly
[INFO] [stdout]    --> tf-ncl/src/nickel_builder.rs:327:21
[INFO] [stdout]     |
[INFO] [stdout] 327 |         typ::{Type, TypeF},
[INFO] [stdout]     |                     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 332 |     use super::*;
[INFO] [stdout]     |         -------- the item `TypeF` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 14s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.84
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "25e0a666c6e709a79c74e0b86eadccca2740cb70ea165c758ec2bf6805cabf74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25e0a666c6e709a79c74e0b86eadccca2740cb70ea165c758ec2bf6805cabf74", kill_on_drop: false }`
[INFO] [stdout] 25e0a666c6e709a79c74e0b86eadccca2740cb70ea165c758ec2bf6805cabf74