[INFO] fetching crate error-stack-derive 0.1.0...
[INFO] testing error-stack-derive-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate error-stack-derive 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate error-stack-derive 0.1.0
[INFO] finished tweaking crates.io crate error-stack-derive 0.1.0
[INFO] tweaked toml for crates.io crate error-stack-derive 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate error-stack-derive 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate error-stack-derive 0.1.0 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93256dee6424eb5dafe36e72764695e259d6d8cea491a576911c900e7a7a21df
[INFO] running `Command { std: "docker" "start" "-a" "93256dee6424eb5dafe36e72764695e259d6d8cea491a576911c900e7a7a21df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93256dee6424eb5dafe36e72764695e259d6d8cea491a576911c900e7a7a21df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93256dee6424eb5dafe36e72764695e259d6d8cea491a576911c900e7a7a21df", kill_on_drop: false }`
[INFO] [stdout] 93256dee6424eb5dafe36e72764695e259d6d8cea491a576911c900e7a7a21df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7def4d0c484c465acc82ba009a3d5d325e3a4edcfb1f33f27a79ef683345c49
[INFO] running `Command { std: "docker" "start" "-a" "b7def4d0c484c465acc82ba009a3d5d325e3a4edcfb1f33f27a79ef683345c49", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling error-stack-derive v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.23s
[INFO] running `Command { std: "docker" "inspect" "b7def4d0c484c465acc82ba009a3d5d325e3a4edcfb1f33f27a79ef683345c49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7def4d0c484c465acc82ba009a3d5d325e3a4edcfb1f33f27a79ef683345c49", kill_on_drop: false }`
[INFO] [stdout] b7def4d0c484c465acc82ba009a3d5d325e3a4edcfb1f33f27a79ef683345c49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5f73296d4d87b56a801aa9f6bd11639a6a3a328891e99283ed04165efaf878d
[INFO] running `Command { std: "docker" "start" "-a" "f5f73296d4d87b56a801aa9f6bd11639a6a3a328891e99283ed04165efaf878d", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling error-stack v0.1.1
[INFO] [stdout] error[E0599]: no method named `backtrace` found for reference `&'a C` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/error-stack-0.1.1/src/context.rs:108:39
[INFO] [stdout]     |
[INFO] [stdout] 108 |         if let Some(backtrace) = self.backtrace() {
[INFO] [stdout]     |                                       ^^^^^^^^^ method not found in `&'a C`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `error-stack` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f5f73296d4d87b56a801aa9f6bd11639a6a3a328891e99283ed04165efaf878d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5f73296d4d87b56a801aa9f6bd11639a6a3a328891e99283ed04165efaf878d", kill_on_drop: false }`
[INFO] [stdout] f5f73296d4d87b56a801aa9f6bd11639a6a3a328891e99283ed04165efaf878d