[INFO] cloning repository https://github.com/sgkoishi/serde_perf
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sgkoishi/serde_perf" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgkoishi%2Fserde_perf", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgkoishi%2Fserde_perf'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ab67a20a548e8d260dbdac5c90abdca555afadb
[INFO] testing sgkoishi/serde_perf against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsgkoishi%2Fserde_perf" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sgkoishi/serde_perf on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sgkoishi/serde_perf
[INFO] finished tweaking git repo https://github.com/sgkoishi/serde_perf
[INFO] tweaked toml for git repo https://github.com/sgkoishi/serde_perf written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/sgkoishi/serde_perf already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 03653bfbf71d4589c0b30abfe58fd795064eee6afff9364f63ec07bfcf4ba8a7
[INFO] running `Command { std: "docker" "start" "-a" "03653bfbf71d4589c0b30abfe58fd795064eee6afff9364f63ec07bfcf4ba8a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03653bfbf71d4589c0b30abfe58fd795064eee6afff9364f63ec07bfcf4ba8a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03653bfbf71d4589c0b30abfe58fd795064eee6afff9364f63ec07bfcf4ba8a7", kill_on_drop: false }`
[INFO] [stdout] 03653bfbf71d4589c0b30abfe58fd795064eee6afff9364f63ec07bfcf4ba8a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 343bc4e4f2101eec30e57f69d8ed767ae62acd1a1f211893235cbdc0954f8cf8
[INFO] running `Command { std: "docker" "start" "-a" "343bc4e4f2101eec30e57f69d8ed767ae62acd1a1f211893235cbdc0954f8cf8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling learn v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: couldn't read ./count: No such file or directory (os error 2)
[INFO] [stdout]   --> build.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let r = include_str!("./count").trim().parse::<usize>().unwrap();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `include_str` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> build.rs:38:17
[INFO] [stdout]     |
[INFO] [stdout] 38  |             rng.gen_range(0..10000)
[INFO] [stdout]     |                 ^^^^^^^^^ cannot infer type for type `{integer}`
[INFO] [stdout]     |
[INFO] [stdout]     = note: multiple `impl`s satisfying `{integer}: SampleUniform` found in the `rand` crate:
[INFO] [stdout]             - impl SampleUniform for i128;
[INFO] [stdout]             - impl SampleUniform for i16;
[INFO] [stdout]             - impl SampleUniform for i32;
[INFO] [stdout]             - impl SampleUniform for i64;
[INFO] [stdout]             and 8 more
[INFO] [stdout] note: required by a bound in `gen_range`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rand-0.8.4/src/rng.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |         T: SampleUniform,
[INFO] [stdout]     |            ^^^^^^^^^^^^^ required by this bound in `gen_range`
[INFO] [stdout] help: use the fully qualified path for the potential candidates
[INFO] [stdout]     |
[INFO] [stdout] 38  |             <f32 as SampleUniform>::gen_range(rng)
[INFO] [stdout]     |
[INFO] [stdout] 38  |             <f64 as SampleUniform>::gen_range(rng)
[INFO] [stdout]     |
[INFO] [stdout] 38  |             <i128 as SampleUniform>::gen_range(rng)
[INFO] [stdout]     |
[INFO] [stdout] 38  |             <i16 as SampleUniform>::gen_range(rng)
[INFO] [stdout]     |
[INFO] [stdout]       and 10 other candidates
[INFO] [stdout] help: consider specifying the type arguments in the method call
[INFO] [stdout]     |
[INFO] [stdout] 38  |             rng.gen_range::<T, R>(0..10000)
[INFO] [stdout]     |                          ++++++++
[INFO] [stdout] help: consider specifying the type arguments in the function call
[INFO] [stdout]     |
[INFO] [stdout] 38  |             rng.gen_range::<T, R>(0..10000)
[INFO] [stdout]     |                          ++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `learn` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "343bc4e4f2101eec30e57f69d8ed767ae62acd1a1f211893235cbdc0954f8cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "343bc4e4f2101eec30e57f69d8ed767ae62acd1a1f211893235cbdc0954f8cf8", kill_on_drop: false }`
[INFO] [stdout] 343bc4e4f2101eec30e57f69d8ed767ae62acd1a1f211893235cbdc0954f8cf8