[INFO] fetching crate scheme4r 0.1.0...
[INFO] checking scheme4r-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate scheme4r 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate scheme4r 0.1.0 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 crates.io crate scheme4r 0.1.0
[INFO] finished tweaking crates.io crate scheme4r 0.1.0
[INFO] tweaked toml for crates.io crate scheme4r 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate scheme4r 0.1.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 }`
[INFO] [stdout] a3007f18d89b04807176822aaacfe87bc995622a37cb87eb0383914574bb603d
[INFO] running `Command { std: "docker" "start" "-a" "a3007f18d89b04807176822aaacfe87bc995622a37cb87eb0383914574bb603d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3007f18d89b04807176822aaacfe87bc995622a37cb87eb0383914574bb603d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3007f18d89b04807176822aaacfe87bc995622a37cb87eb0383914574bb603d", kill_on_drop: false }`
[INFO] [stdout] a3007f18d89b04807176822aaacfe87bc995622a37cb87eb0383914574bb603d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 }`
[INFO] [stdout] 9cbefb37863a7b7a25a504fe70edae6b8e025d16602515c20d4316d895253eae
[INFO] running `Command { std: "docker" "start" "-a" "9cbefb37863a7b7a25a504fe70edae6b8e025d16602515c20d4316d895253eae", kill_on_drop: false }`
[INFO] [stderr]     Checking scheme4r v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Type` is imported redundantly
[INFO] [stdout]   --> src/interpreter.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Type::{self, *},
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 11 |         *,
[INFO] [stdout]    |         - the item `Type` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/define.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/lambda.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env, EnvOps, RefEnv};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnvOps` is imported redundantly
[INFO] [stdout]  --> src/procedure/lambda.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `EnvOps` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env, EnvOps, RefEnv};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/set.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 2 | use crate::env::{Env, EnvOps};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnvOps` is imported redundantly
[INFO] [stdout]  --> src/procedure/set.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `EnvOps` is already imported here
[INFO] [stdout] 2 | use crate::env::{Env, EnvOps};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Type` is imported redundantly
[INFO] [stdout]   --> src/interpreter.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Type::{self, *},
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 11 |         *,
[INFO] [stdout]    |         - the item `Type` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/define.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/lambda.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env, EnvOps, RefEnv};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnvOps` is imported redundantly
[INFO] [stdout]  --> src/procedure/lambda.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `EnvOps` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env, EnvOps, RefEnv};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/set.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 2 | use crate::env::{Env, EnvOps};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnvOps` is imported redundantly
[INFO] [stdout]  --> src/procedure/set.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `EnvOps` is already imported here
[INFO] [stdout] 2 | use crate::env::{Env, EnvOps};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "9cbefb37863a7b7a25a504fe70edae6b8e025d16602515c20d4316d895253eae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cbefb37863a7b7a25a504fe70edae6b8e025d16602515c20d4316d895253eae", kill_on_drop: false }`
[INFO] [stdout] 9cbefb37863a7b7a25a504fe70edae6b8e025d16602515c20d4316d895253eae
[INFO] checking scheme4r-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate scheme4r 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate scheme4r 0.1.0 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 crates.io crate scheme4r 0.1.0
[INFO] finished tweaking crates.io crate scheme4r 0.1.0
[INFO] tweaked toml for crates.io crate scheme4r 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate scheme4r 0.1.0 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 }`
[INFO] [stdout] eb01473e3923a9507ffa3d02a0b5298006208c689c554c590715cf7bd381e943
[INFO] running `Command { std: "docker" "start" "-a" "eb01473e3923a9507ffa3d02a0b5298006208c689c554c590715cf7bd381e943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb01473e3923a9507ffa3d02a0b5298006208c689c554c590715cf7bd381e943", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb01473e3923a9507ffa3d02a0b5298006208c689c554c590715cf7bd381e943", kill_on_drop: false }`
[INFO] [stdout] eb01473e3923a9507ffa3d02a0b5298006208c689c554c590715cf7bd381e943
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 }`
[INFO] [stdout] 8f9892978b97348b9dae66c817f5fe69324d4e0396403d5d1ad6cb4a5f204760
[INFO] running `Command { std: "docker" "start" "-a" "8f9892978b97348b9dae66c817f5fe69324d4e0396403d5d1ad6cb4a5f204760", kill_on_drop: false }`
[INFO] [stderr]     Checking scheme4r v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Type` is imported redundantly
[INFO] [stdout]   --> src/interpreter.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Type::{self, *},
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 11 |         *,
[INFO] [stdout]    |         - the item `Type` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/define.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/lambda.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env, EnvOps, RefEnv};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnvOps` is imported redundantly
[INFO] [stdout]  --> src/procedure/lambda.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `EnvOps` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env, EnvOps, RefEnv};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/set.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 2 | use crate::env::{Env, EnvOps};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnvOps` is imported redundantly
[INFO] [stdout]  --> src/procedure/set.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `EnvOps` is already imported here
[INFO] [stdout] 2 | use crate::env::{Env, EnvOps};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Type` is imported redundantly
[INFO] [stdout]   --> src/interpreter.rs:10:16
[INFO] [stdout]    |
[INFO] [stdout] 10 |         Type::{self, *},
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 11 |         *,
[INFO] [stdout]    |         - the item `Type` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/define.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/lambda.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env, EnvOps, RefEnv};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnvOps` is imported redundantly
[INFO] [stdout]  --> src/procedure/lambda.rs:4:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use super::*;
[INFO] [stdout]   |     -------- the item `EnvOps` is already imported here
[INFO] [stdout] 4 | use crate::env::{Env, EnvOps, RefEnv};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Env` is imported redundantly
[INFO] [stdout]  --> src/procedure/set.rs:2:18
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `Env` is already imported here
[INFO] [stdout] 2 | use crate::env::{Env, EnvOps};
[INFO] [stdout]   |                  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `EnvOps` is imported redundantly
[INFO] [stdout]  --> src/procedure/set.rs:2:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::*;
[INFO] [stdout]   |     -------- the item `EnvOps` is already imported here
[INFO] [stdout] 2 | use crate::env::{Env, EnvOps};
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "8f9892978b97348b9dae66c817f5fe69324d4e0396403d5d1ad6cb4a5f204760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f9892978b97348b9dae66c817f5fe69324d4e0396403d5d1ad6cb4a5f204760", kill_on_drop: false }`
[INFO] [stdout] 8f9892978b97348b9dae66c817f5fe69324d4e0396403d5d1ad6cb4a5f204760