[INFO] fetching crate prefix-varint 0.0.1-alpha.6...
[INFO] checking prefix-varint-0.0.1-alpha.6 against master#39cb3386ddc6c71657418be28dbb3987eea4aa4b for pr-133536
[INFO] extracting crate prefix-varint 0.0.1-alpha.6 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate prefix-varint 0.0.1-alpha.6 on toolchain 39cb3386ddc6c71657418be28dbb3987eea4aa4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prefix-varint 0.0.1-alpha.6
[INFO] finished tweaking crates.io crate prefix-varint 0.0.1-alpha.6
[INFO] tweaked toml for crates.io crate prefix-varint 0.0.1-alpha.6 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 79 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.5.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc8db1d155fc5eff4565f48abfb1454ff62dd87c07dc6b34a5620b744f29c66c
[INFO] running `Command { std: "docker" "start" "-a" "bc8db1d155fc5eff4565f48abfb1454ff62dd87c07dc6b34a5620b744f29c66c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc8db1d155fc5eff4565f48abfb1454ff62dd87c07dc6b34a5620b744f29c66c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc8db1d155fc5eff4565f48abfb1454ff62dd87c07dc6b34a5620b744f29c66c", kill_on_drop: false }`
[INFO] [stdout] bc8db1d155fc5eff4565f48abfb1454ff62dd87c07dc6b34a5620b744f29c66c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+39cb3386ddc6c71657418be28dbb3987eea4aa4b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cedebcf0008f11ff891855aa55fa5195a2a4ac0e5c69ca4e740238dc227c544d
[INFO] running `Command { std: "docker" "start" "-a" "cedebcf0008f11ff891855aa55fa5195a2a4ac0e5c69ca4e740238dc227c544d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.167
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking unicode-width v0.1.14
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking csv v1.3.1
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]     Checking prefix-varint v0.0.1-alpha.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `cursor_remaining`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(cursor_remaining)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prefix-varint` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cedebcf0008f11ff891855aa55fa5195a2a4ac0e5c69ca4e740238dc227c544d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cedebcf0008f11ff891855aa55fa5195a2a4ac0e5c69ca4e740238dc227c544d", kill_on_drop: false }`
[INFO] [stdout] cedebcf0008f11ff891855aa55fa5195a2a4ac0e5c69ca4e740238dc227c544d
