[INFO] fetching crate desert 2.0.1...
[INFO] checking desert-2.0.1 against master#b0696a5160711c068cb1f01b7437db7990d15750 for pr-121848
[INFO] extracting crate desert 2.0.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate desert 2.0.1 on toolchain b0696a5160711c068cb1f01b7437db7990d15750
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate desert 2.0.1
[INFO] finished tweaking crates.io crate desert 2.0.1
[INFO] tweaked toml for crates.io crate desert 2.0.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate desert 2.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b0696a5160711c068cb1f01b7437db7990d15750" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c3a15b66f3cac8ed9c9f336fec53a2f05d6f349a103a5dd3e31a117830b2ab5
[INFO] running `Command { std: "docker" "start" "-a" "8c3a15b66f3cac8ed9c9f336fec53a2f05d6f349a103a5dd3e31a117830b2ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c3a15b66f3cac8ed9c9f336fec53a2f05d6f349a103a5dd3e31a117830b2ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c3a15b66f3cac8ed9c9f336fec53a2f05d6f349a103a5dd3e31a117830b2ab5", kill_on_drop: false }`
[INFO] [stdout] 8c3a15b66f3cac8ed9c9f336fec53a2f05d6f349a103a5dd3e31a117830b2ab5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+b0696a5160711c068cb1f01b7437db7990d15750" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31d76df35de1e6328ccacde99021b94426397ec5a09751ccb5cca07327a54c56
[INFO] running `Command { std: "docker" "start" "-a" "31d76df35de1e6328ccacde99021b94426397ec5a09751ccb5cca07327a54c56", kill_on_drop: false }`
[INFO] [stderr]     Checking desert v2.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `backtrace` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> examples/err.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(backtrace)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `backtrace` found for struct `Box<dyn std::error::Error + Send + Sync>` in the current scope
[INFO] [stdout]   --> examples/err.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     match e.backtrace() {
[INFO] [stdout]    |             ^^^^^^^^^ method not found in `Box<dyn Error + Send + Sync>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `desert` (example "err") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "31d76df35de1e6328ccacde99021b94426397ec5a09751ccb5cca07327a54c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31d76df35de1e6328ccacde99021b94426397ec5a09751ccb5cca07327a54c56", kill_on_drop: false }`
[INFO] [stdout] 31d76df35de1e6328ccacde99021b94426397ec5a09751ccb5cca07327a54c56
[INFO] checking desert-2.0.1 against try#bfe97fcae016881ad333f0ff8cea2cadb9cf136c for pr-121848
[INFO] extracting crate desert 2.0.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate desert 2.0.1 on toolchain bfe97fcae016881ad333f0ff8cea2cadb9cf136c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate desert 2.0.1
[INFO] finished tweaking crates.io crate desert 2.0.1
[INFO] tweaked toml for crates.io crate desert 2.0.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate desert 2.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 103387dbed66d06bc0b4d98b0810b0ee227fdc51c8a04c3e4f497b917b0a23cc
[INFO] running `Command { std: "docker" "start" "-a" "103387dbed66d06bc0b4d98b0810b0ee227fdc51c8a04c3e4f497b917b0a23cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "103387dbed66d06bc0b4d98b0810b0ee227fdc51c8a04c3e4f497b917b0a23cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "103387dbed66d06bc0b4d98b0810b0ee227fdc51c8a04c3e4f497b917b0a23cc", kill_on_drop: false }`
[INFO] [stdout] 103387dbed66d06bc0b4d98b0810b0ee227fdc51c8a04c3e4f497b917b0a23cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+bfe97fcae016881ad333f0ff8cea2cadb9cf136c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fdd16545974cd88b7a55b404923056aaa86a1d38a20cd41945603d96e92e963
[INFO] running `Command { std: "docker" "start" "-a" "7fdd16545974cd88b7a55b404923056aaa86a1d38a20cd41945603d96e92e963", kill_on_drop: false }`
[INFO] [stderr]     Checking desert v2.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `backtrace` has been stable since 1.65.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> examples/err.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(backtrace)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `backtrace` found for struct `Box<dyn std::error::Error + Send + Sync>` in the current scope
[INFO] [stdout]   --> examples/err.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |     match e.backtrace() {
[INFO] [stdout]    |             ^^^^^^^^^ method not found in `Box<dyn Error + Send + Sync>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `desert` (example "err") due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7fdd16545974cd88b7a55b404923056aaa86a1d38a20cd41945603d96e92e963", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fdd16545974cd88b7a55b404923056aaa86a1d38a20cd41945603d96e92e963", kill_on_drop: false }`
[INFO] [stdout] 7fdd16545974cd88b7a55b404923056aaa86a1d38a20cd41945603d96e92e963
