[INFO] cloning repository https://github.com/jamadazi/randsample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jamadazi/randsample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamadazi%2Frandsample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamadazi%2Frandsample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c08a036b30f81f95c30a9430c848b19d9e500352
[INFO] testing jamadazi/randsample against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjamadazi%2Frandsample" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jamadazi/randsample
[INFO] finished tweaking git repo https://github.com/jamadazi/randsample
[INFO] tweaked toml for git repo https://github.com/jamadazi/randsample written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jamadazi/randsample on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jamadazi/randsample 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" "+1.99.0-beta.1" "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/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827
[INFO] running `Command { std: "docker" "start" "6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling anyhow v1.0.35
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling randsample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_blocks)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `str_split_once` has been stable since 1.52.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(str_split_once)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/main.rs:27:24
[INFO] [stdout]     |
[INFO] [stdout]  27 |             let line = line?;
[INFO] [stdout]     |                        ^^^^^ expected `anyhow::Error`, found `std::io::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `std::io::Error` and `anyhow::Error` have similar names, but are actually distinct types
[INFO] [stdout] note: `std::io::Error` is defined in crate `core`
[INFO] [stdout]    --> /rustc/f47d5bb13648d5c859f5b438eb7dc834b9729961/library/core/src/io/error.rs:87:0
[INFO] [stdout] note: `anyhow::Error` is defined in crate `anyhow`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/anyhow-1.0.35/src/lib.rs:364:1
[INFO] [stdout]     |
[INFO] [stdout] 364 | pub struct Error {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^
[INFO] [stdout] help: use the `?` operator to extract the `Result<_, std::io::Error>` value, propagating a `Result::Err` value to the caller
[INFO] [stdout]     |
[INFO] [stdout]  27 |             let line = line??;
[INFO] [stdout]     |                             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `randsample` (bin "randsample") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827", kill_on_drop: false }`
[INFO] [stdout] 6ee28dc4c9e182b82ff98fcc7308318be4885b83c6fff88f4a9a8b471699b827
