[INFO] fetching crate cenc 0.1.0...
[INFO] checking cenc-0.1.0 against try#0edd13c68435d50367c79cef43ac2768d2ec4f3d for pr-129422
[INFO] extracting crate cenc 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate cenc 0.1.0 on toolchain 0edd13c68435d50367c79cef43ac2768d2ec4f3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cenc 0.1.0
[INFO] finished tweaking crates.io crate cenc 0.1.0
[INFO] tweaked toml for crates.io crate cenc 0.1.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding rstest v0.11.0 (latest: v0.22.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.77)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a1973f830b230209958c1468f0b8a51d4861235a74e0ccbf715baf3dc037a44
[INFO] running `Command { std: "docker" "start" "-a" "7a1973f830b230209958c1468f0b8a51d4861235a74e0ccbf715baf3dc037a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a1973f830b230209958c1468f0b8a51d4861235a74e0ccbf715baf3dc037a44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a1973f830b230209958c1468f0b8a51d4861235a74e0ccbf715baf3dc037a44", kill_on_drop: false }`
[INFO] [stdout] 7a1973f830b230209958c1468f0b8a51d4861235a74e0ccbf715baf3dc037a44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+0edd13c68435d50367c79cef43ac2768d2ec4f3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3ea1cfc25d6247d6d98b181d129befc31d01a6074c14f4d672b58f623343dfd
[INFO] running `Command { std: "docker" "start" "-a" "a3ea1cfc25d6247d6d98b181d129befc31d01a6074c14f4d672b58f623343dfd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking cenc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rstest v0.11.0
[INFO] [stdout] warning: trait `IEncoderAlphabet` is never used
[INFO] [stdout]  --> src/proto/common.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait IEncoderAlphabet {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IEncoderAlphabet` is never used
[INFO] [stdout]  --> src/proto/common.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait IEncoderAlphabet {
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.42s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rstest v0.11.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "a3ea1cfc25d6247d6d98b181d129befc31d01a6074c14f4d672b58f623343dfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3ea1cfc25d6247d6d98b181d129befc31d01a6074c14f4d672b58f623343dfd", kill_on_drop: false }`
[INFO] [stdout] a3ea1cfc25d6247d6d98b181d129befc31d01a6074c14f4d672b58f623343dfd