[INFO] fetching crate av-codec 0.2.1...
[INFO] checking av-codec-0.2.1 against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] extracting crate av-codec 0.2.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate av-codec 0.2.1 on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate av-codec 0.2.1
[INFO] finished tweaking crates.io crate av-codec 0.2.1
[INFO] tweaked toml for crates.io crate av-codec 0.2.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb9e839d8288914892d8ac22b96c3f3bbaf37d5d68ea08dd09b80c2b5cb01456
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "eb9e839d8288914892d8ac22b96c3f3bbaf37d5d68ea08dd09b80c2b5cb01456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb9e839d8288914892d8ac22b96c3f3bbaf37d5d68ea08dd09b80c2b5cb01456", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb9e839d8288914892d8ac22b96c3f3bbaf37d5d68ea08dd09b80c2b5cb01456", kill_on_drop: false }`
[INFO] [stdout] eb9e839d8288914892d8ac22b96c3f3bbaf37d5d68ea08dd09b80c2b5cb01456
[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=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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8713fb7dcb350b0b573aed3617c238c43ecb6a0c7dd697c6eb57b81533bf44d6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8713fb7dcb350b0b573aed3617c238c43ecb6a0c7dd697c6eb57b81533bf44d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustversion v1.0.3
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking byte-slice-cast v0.3.5
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling num-derive v0.3.2
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking av-data v0.2.2
[INFO] [stderr]     Checking av-codec v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `format`
[INFO] [stdout]    --> src/decoder.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |             format: Option<Arc<Formaton>>,
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 32.91s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8713fb7dcb350b0b573aed3617c238c43ecb6a0c7dd697c6eb57b81533bf44d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8713fb7dcb350b0b573aed3617c238c43ecb6a0c7dd697c6eb57b81533bf44d6", kill_on_drop: false }`
[INFO] [stdout] 8713fb7dcb350b0b573aed3617c238c43ecb6a0c7dd697c6eb57b81533bf44d6