[INFO] fetching crate mvdb 0.3.0...
[INFO] checking mvdb-0.3.0 against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] extracting crate mvdb 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate mvdb 0.3.0 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 mvdb 0.3.0
[INFO] finished tweaking crates.io crate mvdb 0.3.0
[INFO] tweaked toml for crates.io crate mvdb 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c13d7e61721dc1eae9ad038fc71eeac90a0e4af0cd3a581c9816e0d6480a4ff1
[INFO] running `Command { std: "docker" "start" "-a" "c13d7e61721dc1eae9ad038fc71eeac90a0e4af0cd3a581c9816e0d6480a4ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c13d7e61721dc1eae9ad038fc71eeac90a0e4af0cd3a581c9816e0d6480a4ff1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c13d7e61721dc1eae9ad038fc71eeac90a0e4af0cd3a581c9816e0d6480a4ff1", kill_on_drop: false }`
[INFO] [stdout] c13d7e61721dc1eae9ad038fc71eeac90a0e4af0cd3a581c9816e0d6480a4ff1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5fe26748d43ec15a06b6834ed142bd0fee79296afe11854be8e67cb0a0960af3
[INFO] running `Command { std: "docker" "start" "-a" "5fe26748d43ec15a06b6834ed142bd0fee79296afe11854be8e67cb0a0960af3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.145
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]     Checking backtrace v0.3.67
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking mvdb v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/mvdb.rs:207:26
[INFO] [stdout]     |
[INFO] [stdout] 207 |         just_write(&inner.deref(), &self.file_path, self.pretty)
[INFO] [stdout]     |                          ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `T` does not implement `Deref`, so calling `deref` on `&T` 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] [stdout] error: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/mvdb.rs:207:26
[INFO] [stdout]     |
[INFO] [stdout] 207 |         just_write(&inner.deref(), &self.file_path, self.pretty)
[INFO] [stdout]     |                          ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `T` does not implement `Deref`, so calling `deref` on `&T` 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] [stderr] error: could not compile `mvdb` (lib) due to 2 previous errors
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `mvdb` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5fe26748d43ec15a06b6834ed142bd0fee79296afe11854be8e67cb0a0960af3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fe26748d43ec15a06b6834ed142bd0fee79296afe11854be8e67cb0a0960af3", kill_on_drop: false }`
[INFO] [stdout] 5fe26748d43ec15a06b6834ed142bd0fee79296afe11854be8e67cb0a0960af3