[INFO] fetching crate alexcrichton-cranelift-frontend 0.53.0...
[INFO] checking alexcrichton-cranelift-frontend-0.53.0 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate alexcrichton-cranelift-frontend 0.53.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate alexcrichton-cranelift-frontend 0.53.0 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate alexcrichton-cranelift-frontend 0.53.0
[INFO] finished tweaking crates.io crate alexcrichton-cranelift-frontend 0.53.0
[INFO] tweaked toml for crates.io crate alexcrichton-cranelift-frontend 0.53.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07e1fdffe8e8433396fa86985416e4a5233e291de6562e335ded8d6ba2e84e14
[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" "07e1fdffe8e8433396fa86985416e4a5233e291de6562e335ded8d6ba2e84e14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07e1fdffe8e8433396fa86985416e4a5233e291de6562e335ded8d6ba2e84e14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07e1fdffe8e8433396fa86985416e4a5233e291de6562e335ded8d6ba2e84e14", kill_on_drop: false }`
[INFO] [stdout] 07e1fdffe8e8433396fa86985416e4a5233e291de6562e335ded8d6ba2e84e14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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] 693af9c58c3bf5660b805e329c537e9425a9239df295f8e0274d423b1044d374
[INFO] running `Command { std: "docker" "start" "-a" "693af9c58c3bf5660b805e329c537e9425a9239df295f8e0274d423b1044d374", kill_on_drop: false }`
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen-shared v0.53.0
[INFO] [stderr]    Compiling alexcrichton-cranelift-entity v0.53.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking alexcrichton-cranelift-bforest v0.53.0
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen-meta v0.53.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]    Compiling alexcrichton-cranelift-codegen v0.53.0
[INFO] [stderr]     Checking alexcrichton-cranelift-frontend v0.53.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]     --> src/ssa.rs:1139:24
[INFO] [stdout]      |
[INFO] [stdout] 1139 |                 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] 1139 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1139 |                 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:1318:24
[INFO] [stdout]      |
[INFO] [stdout] 1318 |                 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] 1318 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1318 |                 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:1369:24
[INFO] [stdout]      |
[INFO] [stdout] 1369 |                 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] 1369 |                 panic!("{}", _errors);
[INFO] [stdout]      |                        ^^^^^
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]      |
[INFO] [stdout] 1369 |                 std::panic::panic_any(_errors);
[INFO] [stdout]      |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.44s
[INFO] running `Command { std: "docker" "inspect" "693af9c58c3bf5660b805e329c537e9425a9239df295f8e0274d423b1044d374", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "693af9c58c3bf5660b805e329c537e9425a9239df295f8e0274d423b1044d374", kill_on_drop: false }`
[INFO] [stdout] 693af9c58c3bf5660b805e329c537e9425a9239df295f8e0274d423b1044d374