[INFO] cloning repository https://github.com/nreinhardt/rusty-backup [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nreinhardt/rusty-backup" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnreinhardt%2Frusty-backup", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnreinhardt%2Frusty-backup'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d9dbd2fe304182fba216a60b85a659e88e0da92e [INFO] testing nreinhardt/rusty-backup against beta-2021-01-01 for beta-1.50-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnreinhardt%2Frusty-backup" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nreinhardt/rusty-backup on toolchain beta-2021-01-01 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/nreinhardt/rusty-backup [INFO] finished tweaking git repo https://github.com/nreinhardt/rusty-backup [INFO] tweaked toml for git repo https://github.com/nreinhardt/rusty-backup written to /workspace/builds/worker-0/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded anyhow v1.0.37 [INFO] [stderr] Downloaded memoffset v0.5.6 [INFO] [stderr] Downloaded extend v0.1.2 [INFO] [stderr] Downloaded crossbeam-channel v0.4.4 [INFO] [stderr] Downloaded crossbeam v0.7.3 [INFO] [stderr] Downloaded mockito v0.26.0 [INFO] [stderr] Downloaded assert-json-diff v1.1.0 [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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a4220ee5f574f401508cc4c18179b8777797b7efed5569c58300e5e109f283b1 [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" "a4220ee5f574f401508cc4c18179b8777797b7efed5569c58300e5e109f283b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a4220ee5f574f401508cc4c18179b8777797b7efed5569c58300e5e109f283b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a4220ee5f574f401508cc4c18179b8777797b7efed5569c58300e5e109f283b1", kill_on_drop: false }` [INFO] [stdout] a4220ee5f574f401508cc4c18179b8777797b7efed5569c58300e5e109f283b1 [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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7f51cdc83c5bcad6f513ef07bfe01b2f07e9c058174bbec397b0d56b340c1d89 [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" "7f51cdc83c5bcad6f513ef07bfe01b2f07e9c058174bbec397b0d56b340c1d89", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling serde_urlencoded v0.7.0 [INFO] [stderr] Compiling mio-uds v0.6.8 [INFO] [stderr] Compiling tokio-macros v0.2.6 [INFO] [stderr] Compiling rayon-core v1.9.0 [INFO] [stderr] Compiling futures-util v0.3.8 [INFO] [stderr] Compiling tracing-futures v0.2.4 [INFO] [stderr] Compiling crossbeam v0.7.3 [INFO] [stderr] Compiling rayon v1.5.0 [INFO] [stderr] Compiling tokio v0.2.24 [INFO] [stderr] Compiling futures-executor v0.3.8 [INFO] [stderr] Compiling futures v0.3.8 [INFO] [stderr] Compiling tokio-util v0.3.1 [INFO] [stderr] Compiling tokio-tls v0.3.1 [INFO] [stderr] Compiling h2 v0.2.7 [INFO] [stderr] Compiling hyper v0.13.9 [INFO] [stderr] Compiling hyper-tls v0.4.3 [INFO] [stderr] Compiling reqwest v0.10.10 [INFO] [stderr] Compiling backup v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0658]: use of unstable library feature 'backtrace' [INFO] [stdout] --> src/lib.rs:17:23 [INFO] [stdout] | [INFO] [stdout] 17 | let backtrace = e.backtrace().to_string(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #53487 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `to_string` found for enum `std::option::Option<&Backtrace>` in the current scope [INFO] [stdout] --> src/lib.rs:17:35 [INFO] [stdout] | [INFO] [stdout] 17 | let backtrace = e.backtrace().to_string(); [INFO] [stdout] | ^^^^^^^^^ method not found in `std::option::Option<&Backtrace>` [INFO] [stdout] | [INFO] [stdout] = note: the method `to_string` exists but the following trait bounds were not satisfied: [INFO] [stdout] `std::option::Option<&Backtrace>: std::fmt::Display` [INFO] [stdout] which is required by `std::option::Option<&Backtrace>: ToString` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0599, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0599`. [INFO] [stdout] [INFO] [stderr] error: could not compile `backup` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "7f51cdc83c5bcad6f513ef07bfe01b2f07e9c058174bbec397b0d56b340c1d89", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f51cdc83c5bcad6f513ef07bfe01b2f07e9c058174bbec397b0d56b340c1d89", kill_on_drop: false }` [INFO] [stdout] 7f51cdc83c5bcad6f513ef07bfe01b2f07e9c058174bbec397b0d56b340c1d89