[INFO] fetching crate deskc-amirgen 0.0.0...
[INFO] checking deskc-amirgen-0.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate deskc-amirgen 0.0.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate deskc-amirgen 0.0.0 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 deskc-amirgen 0.0.0
[INFO] finished tweaking crates.io crate deskc-amirgen 0.0.0
[INFO] tweaked toml for crates.io crate deskc-amirgen 0.0.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded deskc-thir v0.0.0
[INFO] [stderr]   Downloaded deskc-amir v0.0.0
[INFO] [stderr]   Downloaded deskc-types v0.0.0
[INFO] [stderr]   Downloaded deskc-link v0.0.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51770f7f3a5d0b8b1eca53c58fc6d63f1096f41d4789c16a29fe1ec51a63da30
[INFO] running `Command { std: "docker" "start" "-a" "51770f7f3a5d0b8b1eca53c58fc6d63f1096f41d4789c16a29fe1ec51a63da30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51770f7f3a5d0b8b1eca53c58fc6d63f1096f41d4789c16a29fe1ec51a63da30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51770f7f3a5d0b8b1eca53c58fc6d63f1096f41d4789c16a29fe1ec51a63da30", kill_on_drop: false }`
[INFO] [stdout] 51770f7f3a5d0b8b1eca53c58fc6d63f1096f41d4789c16a29fe1ec51a63da30
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1ff69cc51d1ecea489c76ed16c3ba096c48c3affcc43c6304411ec0de3a53f8
[INFO] running `Command { std: "docker" "start" "-a" "f1ff69cc51d1ecea489c76ed16c3ba096c48c3affcc43c6304411ec0de3a53f8", kill_on_drop: false }`
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking deskc-types v0.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking deskc-link v0.0.0
[INFO] [stderr]     Checking deskc-thir v0.0.0
[INFO] [stderr]     Checking deskc-amir v0.0.0
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking deskc-amirgen v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ATerminator` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:347:16
[INFO] [stdout]     |
[INFO] [stdout] 347 |         stmt::{ATerminator, StmtBind},
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 351 |     use super::*;
[INFO] [stdout]     |         -------- the item `ATerminator` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "f1ff69cc51d1ecea489c76ed16c3ba096c48c3affcc43c6304411ec0de3a53f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1ff69cc51d1ecea489c76ed16c3ba096c48c3affcc43c6304411ec0de3a53f8", kill_on_drop: false }`
[INFO] [stdout] f1ff69cc51d1ecea489c76ed16c3ba096c48c3affcc43c6304411ec0de3a53f8
[INFO] checking deskc-amirgen-0.0.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate deskc-amirgen 0.0.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate deskc-amirgen 0.0.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate deskc-amirgen 0.0.0
[INFO] finished tweaking crates.io crate deskc-amirgen 0.0.0
[INFO] tweaked toml for crates.io crate deskc-amirgen 0.0.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 12 packages
[INFO] [stderr]       Adding uuid v0.8.2 (latest: v1.8.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 116eb396ac0a3253d8da60abb66ccb07debc161b18b92446cc18de25a03c83d0
[INFO] running `Command { std: "docker" "start" "-a" "116eb396ac0a3253d8da60abb66ccb07debc161b18b92446cc18de25a03c83d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "116eb396ac0a3253d8da60abb66ccb07debc161b18b92446cc18de25a03c83d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "116eb396ac0a3253d8da60abb66ccb07debc161b18b92446cc18de25a03c83d0", kill_on_drop: false }`
[INFO] [stdout] 116eb396ac0a3253d8da60abb66ccb07debc161b18b92446cc18de25a03c83d0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45fb21502b26d1c082e11d5fac5670cfe7e6af86be22a6d62bebe6d18c5f252a
[INFO] running `Command { std: "docker" "start" "-a" "45fb21502b26d1c082e11d5fac5670cfe7e6af86be22a6d62bebe6d18c5f252a", kill_on_drop: false }`
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking deskc-types v0.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking deskc-link v0.0.0
[INFO] [stderr]     Checking deskc-amir v0.0.0
[INFO] [stderr]     Checking deskc-thir v0.0.0
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking deskc-amirgen v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ATerminator` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:347:16
[INFO] [stdout]     |
[INFO] [stdout] 347 |         stmt::{ATerminator, StmtBind},
[INFO] [stdout]     |                ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 351 |     use super::*;
[INFO] [stdout]     |         -------- the item `ATerminator` is already imported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "45fb21502b26d1c082e11d5fac5670cfe7e6af86be22a6d62bebe6d18c5f252a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45fb21502b26d1c082e11d5fac5670cfe7e6af86be22a6d62bebe6d18c5f252a", kill_on_drop: false }`
[INFO] [stdout] 45fb21502b26d1c082e11d5fac5670cfe7e6af86be22a6d62bebe6d18c5f252a