[INFO] cloning repository https://github.com/siddharth1825/rust_backend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/siddharth1825/rust_backend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsiddharth1825%2Frust_backend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsiddharth1825%2Frust_backend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a150d2b3356ace51c3a8067d59088200c91532df
[INFO] checking siddharth1825/rust_backend against try#ddcf048784667508cd676fef4667f88ae15628a3 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsiddharth1825%2Frust_backend" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/siddharth1825/rust_backend
[INFO] finished tweaking git repo https://github.com/siddharth1825/rust_backend
[INFO] tweaked toml for git repo https://github.com/siddharth1825/rust_backend written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/siddharth1825/rust_backend on toolchain ddcf048784667508cd676fef4667f88ae15628a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/siddharth1825/rust_backend 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" "+ddcf048784667508cd676fef4667f88ae15628a3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-stream-impl v0.3.4
[INFO] [stderr]   Downloaded ref-cast v1.0.14
[INFO] [stderr]   Downloaded bcrypt v0.13.0
[INFO] [stderr]   Downloaded pq-sys v0.4.7
[INFO] [stderr]   Downloaded hyper v0.14.24
[INFO] [stderr]   Downloaded diesel_derives v2.0.1
[INFO] [stderr]   Downloaded diesel v2.0.3
[INFO] [stderr]   Downloaded async-stream v0.3.4
[INFO] [stderr]   Downloaded ref-cast-impl v1.0.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a43a9d3edbaf8811e71321dcfe840315425f32e198e305ba07cdc52a549fb77e
[INFO] running `Command { std: "docker" "start" "-a" "a43a9d3edbaf8811e71321dcfe840315425f32e198e305ba07cdc52a549fb77e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a43a9d3edbaf8811e71321dcfe840315425f32e198e305ba07cdc52a549fb77e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a43a9d3edbaf8811e71321dcfe840315425f32e198e305ba07cdc52a549fb77e", kill_on_drop: false }`
[INFO] [stdout] a43a9d3edbaf8811e71321dcfe840315425f32e198e305ba07cdc52a549fb77e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86c9bfdef1312e567d5f53c9ec8570051c62d359809e022b8d6cc2bbe04dac2d
[INFO] running `Command { std: "docker" "start" "-a" "86c9bfdef1312e567d5f53c9ec8570051c62d359809e022b8d6cc2bbe04dac2d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling futures-channel v0.3.26
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]    Compiling futures-core v0.3.26
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling subtle v2.4.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.51/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking inout v0.1.3
[INFO] [stderr]    Compiling tokio v1.25.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "86c9bfdef1312e567d5f53c9ec8570051c62d359809e022b8d6cc2bbe04dac2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86c9bfdef1312e567d5f53c9ec8570051c62d359809e022b8d6cc2bbe04dac2d", kill_on_drop: false }`
[INFO] [stdout] 86c9bfdef1312e567d5f53c9ec8570051c62d359809e022b8d6cc2bbe04dac2d