[INFO] fetching crate breaktarget 0.1.0...
[INFO] checking breaktarget-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate breaktarget 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate breaktarget 0.1.0 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 breaktarget 0.1.0
[INFO] finished tweaking crates.io crate breaktarget 0.1.0
[INFO] tweaked toml for crates.io crate breaktarget 0.1.0 written to /workspace/builds/worker-2-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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 0092fa2ac5277c350288d4b5737bd3f01c9a540dd2069656e74fc4ab1d4127ca
[INFO] running `Command { std: "docker" "start" "-a" "0092fa2ac5277c350288d4b5737bd3f01c9a540dd2069656e74fc4ab1d4127ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0092fa2ac5277c350288d4b5737bd3f01c9a540dd2069656e74fc4ab1d4127ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0092fa2ac5277c350288d4b5737bd3f01c9a540dd2069656e74fc4ab1d4127ca", kill_on_drop: false }`
[INFO] [stdout] 0092fa2ac5277c350288d4b5737bd3f01c9a540dd2069656e74fc4ab1d4127ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 721cf6119baaffe8d2fcef262c51b2f9aa01e7303340d69774736ceb3f68ec8d
[INFO] running `Command { std: "docker" "start" "-a" "721cf6119baaffe8d2fcef262c51b2f9aa01e7303340d69774736ceb3f68ec8d", kill_on_drop: false }`
[INFO] [stderr]     Checking breaktarget v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/lib.rs:149:79
[INFO] [stdout]     |
[INFO] [stdout] 149 |         if let Err(e) = panic::catch_unwind(|| BreakTarget::deploy(|_| panic!(1u32))) {
[INFO] [stdout]     |                                                                               ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 149 |         if let Err(e) = panic::catch_unwind(|| BreakTarget::deploy(|_| panic!("{}", 1u32))) {
[INFO] [stdout]     |                                                                               +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 149 |         if let Err(e) = panic::catch_unwind(|| BreakTarget::deploy(|_| std::panic::panic_any(1u32))) {
[INFO] [stdout]     |                                                                        ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "721cf6119baaffe8d2fcef262c51b2f9aa01e7303340d69774736ceb3f68ec8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "721cf6119baaffe8d2fcef262c51b2f9aa01e7303340d69774736ceb3f68ec8d", kill_on_drop: false }`
[INFO] [stdout] 721cf6119baaffe8d2fcef262c51b2f9aa01e7303340d69774736ceb3f68ec8d
[INFO] checking breaktarget-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate breaktarget 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate breaktarget 0.1.0 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate breaktarget 0.1.0
[INFO] finished tweaking crates.io crate breaktarget 0.1.0
[INFO] tweaked toml for crates.io crate breaktarget 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 86eb8a20791360232d3680ed18b144ec86639d3cc18891a3d60767bb4ec51e88
[INFO] running `Command { std: "docker" "start" "-a" "86eb8a20791360232d3680ed18b144ec86639d3cc18891a3d60767bb4ec51e88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "86eb8a20791360232d3680ed18b144ec86639d3cc18891a3d60767bb4ec51e88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86eb8a20791360232d3680ed18b144ec86639d3cc18891a3d60767bb4ec51e88", kill_on_drop: false }`
[INFO] [stdout] 86eb8a20791360232d3680ed18b144ec86639d3cc18891a3d60767bb4ec51e88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a2c8f0e1e7e316769bba84a267d4b86ee1de56ac7d8895e39579e90529580cc1
[INFO] running `Command { std: "docker" "start" "-a" "a2c8f0e1e7e316769bba84a267d4b86ee1de56ac7d8895e39579e90529580cc1", kill_on_drop: false }`
[INFO] [stderr]     Checking breaktarget v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed for `&BreakTarget<T>`
[INFO] [stdout]    --> src/lib.rs:140:34
[INFO] [stdout]     |
[INFO] [stdout] 140 |             BreakTarget::deploy(|_| t.break_with(1));
[INFO] [stdout]     |                                  ^
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 140 |             BreakTarget::deploy(|_: &BreakTarget<T>| t.break_with(1));
[INFO] [stdout]     |                                   +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed for `&BreakTarget<T>`
[INFO] [stdout]    --> src/lib.rs:149:69
[INFO] [stdout]     |
[INFO] [stdout] 149 |         if let Err(e) = panic::catch_unwind(|| BreakTarget::deploy(|_| panic!(1u32))) {
[INFO] [stdout]     |                                                                     ^
[INFO] [stdout]     |
[INFO] [stdout] help: consider giving this closure parameter an explicit type, where the type for type parameter `R` is specified
[INFO] [stdout]     |
[INFO] [stdout] 149 |         if let Err(e) = panic::catch_unwind(|| BreakTarget::deploy(|_: &BreakTarget<T>| panic!(1u32))) {
[INFO] [stdout]     |                                                                      +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `breaktarget` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "a2c8f0e1e7e316769bba84a267d4b86ee1de56ac7d8895e39579e90529580cc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2c8f0e1e7e316769bba84a267d4b86ee1de56ac7d8895e39579e90529580cc1", kill_on_drop: false }`
[INFO] [stdout] a2c8f0e1e7e316769bba84a267d4b86ee1de56ac7d8895e39579e90529580cc1