[INFO] fetching crate imbl 2.0.0...
[INFO] checking imbl-2.0.0 against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] extracting crate imbl 2.0.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate imbl 2.0.0 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 imbl 2.0.0
[INFO] finished tweaking crates.io crate imbl 2.0.0
[INFO] tweaked toml for crates.io crate imbl 2.0.0 written to /workspace/builds/worker-0-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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d5fd50008bab96e38811157bc6b1a3cfae4b72fecc0f8623686d4ae140ca5635
[INFO] running `Command { std: "docker" "start" "-a" "d5fd50008bab96e38811157bc6b1a3cfae4b72fecc0f8623686d4ae140ca5635", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5fd50008bab96e38811157bc6b1a3cfae4b72fecc0f8623686d4ae140ca5635", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5fd50008bab96e38811157bc6b1a3cfae4b72fecc0f8623686d4ae140ca5635", kill_on_drop: false }`
[INFO] [stdout] d5fd50008bab96e38811157bc6b1a3cfae4b72fecc0f8623686d4ae140ca5635
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 43e4feb3a1c86324d1ec421a841e794c559eaadadc33a77b14ca6ad2694a5011
[INFO] running `Command { std: "docker" "start" "-a" "43e4feb3a1c86324d1ec421a841e794c559eaadadc33a77b14ca6ad2694a5011", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking bitmaps v3.2.0
[INFO] [stderr]     Checking rayon-core v1.11.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking imbl-sized-chunks v0.1.1
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking metrohash v1.0.6
[INFO] [stderr]     Checking imbl v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking proptest v1.2.0
[INFO] [stderr]     Checking serde_json v1.0.96
[INFO] [stderr]    Compiling proptest-derive v0.3.0
[INFO] [stdout] error: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:141:34
[INFO] [stdout]     |
[INFO] [stdout] 141 |             s.serialize_element(i.deref())?;
[INFO] [stdout]     |                                  ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `A` does not implement `Deref`, so calling `deref` on `&A` 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: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:167:32
[INFO] [stdout]     |
[INFO] [stdout] 167 |             s.serialize_entry(k.deref(), v.deref())?;
[INFO] [stdout]     |                                ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `K` does not implement `Deref`, so calling `deref` on `&K` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:167:43
[INFO] [stdout]     |
[INFO] [stdout] 167 |             s.serialize_entry(k.deref(), v.deref())?;
[INFO] [stdout]     |                                           ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `V` does not implement `Deref`, so calling `deref` on `&V` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:201:32
[INFO] [stdout]     |
[INFO] [stdout] 201 |             s.serialize_entry(k.deref(), v.deref())?;
[INFO] [stdout]     |                                ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `K` does not implement `Deref`, so calling `deref` on `&K` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:201:43
[INFO] [stdout]     |
[INFO] [stdout] 201 |             s.serialize_entry(k.deref(), v.deref())?;
[INFO] [stdout]     |                                           ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `V` does not implement `Deref`, so calling `deref` on `&V` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:227:34
[INFO] [stdout]     |
[INFO] [stdout] 227 |             s.serialize_element(i.deref())?;
[INFO] [stdout]     |                                  ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `A` does not implement `Deref`, so calling `deref` on `&A` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/ser.rs:251:34
[INFO] [stdout]     |
[INFO] [stdout] 251 |             s.serialize_element(i.deref())?;
[INFO] [stdout]     |                                  ^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `A` does not implement `Deref`, so calling `deref` on `&A` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imbl` (lib test) due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "43e4feb3a1c86324d1ec421a841e794c559eaadadc33a77b14ca6ad2694a5011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43e4feb3a1c86324d1ec421a841e794c559eaadadc33a77b14ca6ad2694a5011", kill_on_drop: false }`
[INFO] [stdout] 43e4feb3a1c86324d1ec421a841e794c559eaadadc33a77b14ca6ad2694a5011