[INFO] fetching crate zc 0.4.0...
[INFO] checking zc-0.4.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate zc 0.4.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate zc 0.4.0
[INFO] finished tweaking crates.io crate zc 0.4.0
[INFO] tweaked toml for crates.io crate zc 0.4.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate zc 0.4.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate zc 0.4.0 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f908f7c5c96bf58cd7f6caa58c384dbc8393790766c943dabcaeed22536522e
[INFO] running `Command { std: "docker" "start" "-a" "2f908f7c5c96bf58cd7f6caa58c384dbc8393790766c943dabcaeed22536522e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f908f7c5c96bf58cd7f6caa58c384dbc8393790766c943dabcaeed22536522e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f908f7c5c96bf58cd7f6caa58c384dbc8393790766c943dabcaeed22536522e", kill_on_drop: false }`
[INFO] [stdout] 2f908f7c5c96bf58cd7f6caa58c384dbc8393790766c943dabcaeed22536522e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 568adf8ef6fffba63a6beba2a7b876803ac9d896345b462441280fda86fe5275
[INFO] running `Command { std: "docker" "start" "-a" "568adf8ef6fffba63a6beba2a7b876803ac9d896345b462441280fda86fe5275", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.120
[INFO] [stderr]    Compiling serde v1.0.120
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling trybuild v1.0.38
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking bytecount v0.6.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking dangerous v0.8.0
[INFO] [stderr]    Compiling zc-derive v0.4.0
[INFO] [stderr]     Checking zc v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]    --> src/lib.rs:152:24
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn get<'a, T>(&'a self) -> &T
[INFO] [stdout]     |                        ^^          -- the lifetime gets resolved as `'a`
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        this lifetime flows to the output
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:16:5
[INFO] [stdout]     |
[INFO] [stdout] 16  |     warnings
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     = note: `#[forbid(mismatched_lifetime_syntaxes)]` implied by `#[forbid(warnings)]`
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 152 |     pub fn get<'a, T>(&'a self) -> &'a T
[INFO] [stdout]     |                                     ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zc` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "568adf8ef6fffba63a6beba2a7b876803ac9d896345b462441280fda86fe5275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "568adf8ef6fffba63a6beba2a7b876803ac9d896345b462441280fda86fe5275", kill_on_drop: false }`
[INFO] [stdout] 568adf8ef6fffba63a6beba2a7b876803ac9d896345b462441280fda86fe5275