[INFO] fetching crate wasmer-clif-fork-frontend 0.59.0...
[INFO] checking wasmer-clif-fork-frontend-0.59.0 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate wasmer-clif-fork-frontend 0.59.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate wasmer-clif-fork-frontend 0.59.0 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmer-clif-fork-frontend 0.59.0
[INFO] finished tweaking crates.io crate wasmer-clif-fork-frontend 0.59.0
[INFO] tweaked toml for crates.io crate wasmer-clif-fork-frontend 0.59.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c7980d1fd03ed719f2ea873a367fd790629bfd6f0f00d8ff50e777b91caab12
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6c7980d1fd03ed719f2ea873a367fd790629bfd6f0f00d8ff50e777b91caab12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c7980d1fd03ed719f2ea873a367fd790629bfd6f0f00d8ff50e777b91caab12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c7980d1fd03ed719f2ea873a367fd790629bfd6f0f00d8ff50e777b91caab12", kill_on_drop: false }`
[INFO] [stdout] 6c7980d1fd03ed719f2ea873a367fd790629bfd6f0f00d8ff50e777b91caab12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dcf5bac8759142541de56dc4c964d6edf6a62e2160961d7c2e9c57cc068499fa
[INFO] running `Command { std: "docker" "start" "-a" "dcf5bac8759142541de56dc4c964d6edf6a62e2160961d7c2e9c57cc068499fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling cranelift-codegen-shared v0.59.0
[INFO] [stderr]    Compiling cranelift-entity v0.59.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling syn v1.0.67
[INFO] [stderr]     Checking cranelift-bforest v0.59.0
[INFO] [stderr]    Compiling cranelift-codegen-meta v0.59.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]    Compiling cranelift-codegen v0.59.0
[INFO] [stderr]     Checking wasmer-clif-fork-frontend v0.59.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/frontend.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]    --> src/ssa.rs:191:12
[INFO] [stdout]     |
[INFO] [stdout] 191 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/frontend.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn is_empty(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]    --> src/ssa.rs:191:12
[INFO] [stdout]     |
[INFO] [stdout] 191 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/ssa.rs:1148:24
[INFO] [stdout]      |
[INFO] [stdout] 1148 |                 panic!(_errors);
[INFO] [stdout]      |                        ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1148 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1148 |                 std::panic::panic_any(_errors);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/ssa.rs:1327:24
[INFO] [stdout]      |
[INFO] [stdout] 1327 |                 panic!(_errors);
[INFO] [stdout]      |                        ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1327 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1327 |                 std::panic::panic_any(_errors);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/ssa.rs:1378:24
[INFO] [stdout]      |
[INFO] [stdout] 1378 |                 panic!(_errors);
[INFO] [stdout]      |                        ^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: this is no longer accepted in Rust 2021
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]      |
[INFO] [stdout] 1378 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1378 |                 std::panic::panic_any(_errors);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.23s
[INFO] running `Command { std: "docker" "inspect" "dcf5bac8759142541de56dc4c964d6edf6a62e2160961d7c2e9c57cc068499fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcf5bac8759142541de56dc4c964d6edf6a62e2160961d7c2e9c57cc068499fa", kill_on_drop: false }`
[INFO] [stdout] dcf5bac8759142541de56dc4c964d6edf6a62e2160961d7c2e9c57cc068499fa