[INFO] fetching crate printjsonerr 0.0.1...
[INFO] checking printjsonerr-0.0.1 against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] extracting crate printjsonerr 0.0.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate printjsonerr 0.0.1 on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate printjsonerr 0.0.1
[INFO] finished tweaking crates.io crate printjsonerr 0.0.1
[INFO] tweaked toml for crates.io crate printjsonerr 0.0.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate printjsonerr 0.0.1 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" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5bc271c06ecc29360935556f361bdc6025bbc7b76db053136f6a3cef4d29dc39
[INFO] running `Command { std: "docker" "start" "-a" "5bc271c06ecc29360935556f361bdc6025bbc7b76db053136f6a3cef4d29dc39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bc271c06ecc29360935556f361bdc6025bbc7b76db053136f6a3cef4d29dc39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bc271c06ecc29360935556f361bdc6025bbc7b76db053136f6a3cef4d29dc39", kill_on_drop: false }`
[INFO] [stdout] 5bc271c06ecc29360935556f361bdc6025bbc7b76db053136f6a3cef4d29dc39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] adebfde6eec12fc7985eebd4c65c1e287aacf371f622865889e235e0dd45f350
[INFO] running `Command { std: "docker" "start" "-a" "adebfde6eec12fc7985eebd4c65c1e287aacf371f622865889e235e0dd45f350", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling serde_derive v1.0.162
[INFO] [stderr]    Compiling serde v1.0.162
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]    Compiling function_name-proc-macro v0.3.0
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking function_name v0.3.0
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]     Checking serde_json v1.0.96
[INFO] [stderr]     Checking jsonerr v0.0.2
[INFO] [stderr]     Checking printjsonerr v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:124:38
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let newprepend = [previousprepend.clone(), { PREPENDSEP }, PREPENDSPACES].join("");
[INFO] [stdout]     |                                      ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `printjsonerr` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:124:38
[INFO] [stdout]     |
[INFO] [stdout] 124 |     let newprepend = [previousprepend.clone(), { PREPENDSEP }, PREPENDSPACES].join("");
[INFO] [stdout]     |                                      ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `printjsonerr` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "adebfde6eec12fc7985eebd4c65c1e287aacf371f622865889e235e0dd45f350", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adebfde6eec12fc7985eebd4c65c1e287aacf371f622865889e235e0dd45f350", kill_on_drop: false }`
[INFO] [stdout] adebfde6eec12fc7985eebd4c65c1e287aacf371f622865889e235e0dd45f350