[INFO] fetching crate graviton_backend 0.6.0...
[INFO] checking graviton_backend-0.6.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate graviton_backend 0.6.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate graviton_backend 0.6.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate graviton_backend 0.6.0
[INFO] finished tweaking crates.io crate graviton_backend 0.6.0
[INFO] tweaked toml for crates.io crate graviton_backend 0.6.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 68 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding colored v1.9.4 (latest: v2.1.0)
[INFO] [stderr]       Adding cranelift v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-bforest v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen-meta v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-codegen-shared v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-entity v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-faerie v0.56.0 (latest: v0.66.0)
[INFO] [stderr]       Adding cranelift-frontend v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-module v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding cranelift-native v0.56.0 (latest: v0.106.1)
[INFO] [stderr]       Adding ctor v0.1.26 (latest: v0.2.7)
[INFO] [stderr]       Adding erased-serde v0.3.31 (latest: v0.4.4)
[INFO] [stderr]       Adding faerie v0.14.0 (latest: v0.16.0)
[INFO] [stderr]       Adding goblin v0.1.3 (latest: v0.8.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding inventory v0.2.3 (latest: v0.3.15)
[INFO] [stderr]       Adding raw-cpuid v7.0.4 (latest: v11.0.1)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding scroll v0.10.2 (latest: v0.12.0)
[INFO] [stderr]       Adding scroll_derive v0.10.5 (latest: v0.12.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding string-interner v0.7.1 (latest: v0.15.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding target-lexicon v0.10.0 (latest: v0.12.14)
[INFO] [stderr]       Adding typetag v0.1.8 (latest: v0.2.16)
[INFO] [stderr]       Adding typetag-impl v0.1.8 (latest: v0.2.16)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded target-lexicon v0.10.0
[INFO] [stderr]   Downloaded cranelift-entity v0.56.0
[INFO] [stderr]   Downloaded string-interner v0.7.1
[INFO] [stderr]   Downloaded cranelift-frontend v0.56.0
[INFO] [stderr]   Downloaded faerie v0.14.0
[INFO] [stderr]   Downloaded cranelift-module v0.56.0
[INFO] [stderr]   Downloaded cranelift-bforest v0.56.0
[INFO] [stderr]   Downloaded cranelift v0.56.0
[INFO] [stderr]   Downloaded cranelift-codegen-meta v0.56.0
[INFO] [stderr]   Downloaded raw-cpuid v7.0.4
[INFO] [stderr]   Downloaded goblin v0.1.3
[INFO] [stderr]   Downloaded cranelift-codegen v0.56.0
[INFO] [stderr]   Downloaded cranelift-native v0.56.0
[INFO] [stderr]   Downloaded graviton_ast v0.6.0
[INFO] [stderr]   Downloaded graviton_core v0.6.0
[INFO] [stderr]   Downloaded cranelift-faerie v0.56.0
[INFO] [stderr]   Downloaded cranelift-codegen-shared v0.56.0
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed2161db41e5f67ec9b82108a216222bc7f604e11e7a7ccc09c27f58b5e17eb8
[INFO] running `Command { std: "docker" "start" "-a" "ed2161db41e5f67ec9b82108a216222bc7f604e11e7a7ccc09c27f58b5e17eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed2161db41e5f67ec9b82108a216222bc7f604e11e7a7ccc09c27f58b5e17eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed2161db41e5f67ec9b82108a216222bc7f604e11e7a7ccc09c27f58b5e17eb8", kill_on_drop: false }`
[INFO] [stdout] ed2161db41e5f67ec9b82108a216222bc7f604e11e7a7ccc09c27f58b5e17eb8
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7dd3b4a924ffa47160337080f3ba3e7724b498415de263f066cc7d5e7a404b6a
[INFO] running `Command { std: "docker" "start" "-a" "7dd3b4a924ffa47160337080f3ba3e7724b498415de263f066cc7d5e7a404b6a", kill_on_drop: false }`
[INFO] [stderr]    Compiling cranelift-entity v0.56.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.56.0
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling raw-cpuid v7.0.4
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking colored v1.9.4
[INFO] [stderr]     Checking string-interner v0.7.1
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.56.0
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]    Compiling ghost v0.1.17
[INFO] [stderr]     Checking cranelift-bforest v0.56.0
[INFO] [stderr]    Compiling crc16 v0.4.0
[INFO] [stderr]     Checking graviton_core v0.6.0
[INFO] [stderr]     Checking erased-serde v0.3.31
[INFO] [stderr]    Compiling typetag-impl v0.1.8
[INFO] [stderr]     Checking graviton_ast v0.6.0
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]     Checking goblin v0.1.3
[INFO] [stderr]     Checking inventory v0.2.3
[INFO] [stderr]     Checking typetag v0.1.8
[INFO] [stderr]     Checking faerie v0.14.0
[INFO] [stderr]    Compiling cranelift-codegen v0.56.0
[INFO] [stderr]     Checking cranelift-module v0.56.0
[INFO] [stderr]     Checking cranelift-frontend v0.56.0
[INFO] [stderr]     Checking cranelift-native v0.56.0
[INFO] [stderr]     Checking cranelift-faerie v0.56.0
[INFO] [stderr]     Checking cranelift v0.56.0
[INFO] [stderr]     Checking graviton_backend v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/native/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cranelift::codegen::ir::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 7 | use cranelift::frontend::*;
[INFO] [stdout] 8 | use cranelift::prelude::*;
[INFO] [stdout]   |     --------------------- the item `Value` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ast` is imported redundantly
[INFO] [stdout]  --> src/native/gravtypes.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::ast;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate graviton_ast as ast;
[INFO] [stdout]   | --------------------------------- the item `ast` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Value` is imported redundantly
[INFO] [stdout]  --> src/native/mod.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use cranelift::codegen::ir::Value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 7 | use cranelift::frontend::*;
[INFO] [stdout] 8 | use cranelift::prelude::*;
[INFO] [stdout]   |     --------------------- the item `Value` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ast` is imported redundantly
[INFO] [stdout]  --> src/native/gravtypes.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use super::ast;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate graviton_ast as ast;
[INFO] [stdout]   | --------------------------------- the item `ast` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.24s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: cranelift-codegen-meta v0.56.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "7dd3b4a924ffa47160337080f3ba3e7724b498415de263f066cc7d5e7a404b6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dd3b4a924ffa47160337080f3ba3e7724b498415de263f066cc7d5e7a404b6a", kill_on_drop: false }`
[INFO] [stdout] 7dd3b4a924ffa47160337080f3ba3e7724b498415de263f066cc7d5e7a404b6a