[INFO] cloning repository https://github.com/enkron/single_threaded_web_server
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/enkron/single_threaded_web_server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenkron%2Fsingle_threaded_web_server", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenkron%2Fsingle_threaded_web_server'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 27eba6fa62fd6d3cdb01f385e3502a94f82d941d
[INFO] building enkron/single_threaded_web_server against master#70591dc15db32941fe3595fdbf98e58d6975f95e for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenkron%2Fsingle_threaded_web_server" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/enkron/single_threaded_web_server on toolchain 70591dc15db32941fe3595fdbf98e58d6975f95e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/enkron/single_threaded_web_server
[INFO] finished tweaking git repo https://github.com/enkron/single_threaded_web_server
[INFO] tweaked toml for git repo https://github.com/enkron/single_threaded_web_server written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/enkron/single_threaded_web_server 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" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "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
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] building enkron/single_threaded_web_server against try#7587ff3622fbec0abf6ac551eab5226f22f5d958 for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fenkron%2Fsingle_threaded_web_server" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/enkron/single_threaded_web_server on toolchain 7587ff3622fbec0abf6ac551eab5226f22f5d958
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/enkron/single_threaded_web_server
[INFO] finished tweaking git repo https://github.com/enkron/single_threaded_web_server
[INFO] tweaked toml for git repo https://github.com/enkron/single_threaded_web_server written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/enkron/single_threaded_web_server 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" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "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] 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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e368e3a205c2ce81cc2481777bdf42958d6a2e6929254bdc5db9d16c49ec1fec
[INFO] running `Command { std: "docker" "start" "-a" "e368e3a205c2ce81cc2481777bdf42958d6a2e6929254bdc5db9d16c49ec1fec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e368e3a205c2ce81cc2481777bdf42958d6a2e6929254bdc5db9d16c49ec1fec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e368e3a205c2ce81cc2481777bdf42958d6a2e6929254bdc5db9d16c49ec1fec", kill_on_drop: false }`
[INFO] [stdout] e368e3a205c2ce81cc2481777bdf42958d6a2e6929254bdc5db9d16c49ec1fec
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5952f538a3be1eb64c3bf7ac6c5c7f48c66b912fc71060f66763703e17d46508
[INFO] running `Command { std: "docker" "start" "-a" "5952f538a3be1eb64c3bf7ac6c5c7f48c66b912fc71060f66763703e17d46508", kill_on_drop: false }`
[INFO] [stderr]    Compiling single_threaded_web_server v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0428]: the name `Job` is defined multiple times
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Job;
[INFO] [stdout]    | ----------- previous definition of the type `Job` here
[INFO] [stdout] 10 |
[INFO] [stdout] 11 | type Job = Box<dyn FnOnce() + Send + 'static>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Job` redefined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Job` must be defined only once in the type namespace of this module
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:43:26
[INFO] [stdout]    |
[INFO] [stdout] 43 |         self.sender.send(job).unwrap();
[INFO] [stdout]    |                     ---- ^^^ expected `Job`, found `Box<F>`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     arguments to this method are incorrect
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Job`
[INFO] [stdout]               found struct `Box<F>`
[INFO] [stdout] help: the return type of this call is `Box<F>` due to the type of the argument passed
[INFO] [stdout]   --> src/lib.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |         self.sender.send(job).unwrap();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^---^
[INFO] [stdout]    |                          |
[INFO] [stdout]    |                          this argument influences the return type of `send`
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> /rustc/7587ff3622fbec0abf6ac551eab5226f22f5d958/library/std/src/sync/mpsc/mod.rs:611:12
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0428.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `single_threaded_web_server` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "5952f538a3be1eb64c3bf7ac6c5c7f48c66b912fc71060f66763703e17d46508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5952f538a3be1eb64c3bf7ac6c5c7f48c66b912fc71060f66763703e17d46508", kill_on_drop: false }`
[INFO] [stdout] 5952f538a3be1eb64c3bf7ac6c5c7f48c66b912fc71060f66763703e17d46508