[INFO] fetching crate im-rc 15.1.0... [INFO] checking im-rc-15.1.0 against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160 [INFO] extracting crate im-rc 15.1.0 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate im-rc 15.1.0 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 im-rc 15.1.0 [INFO] finished tweaking crates.io crate im-rc 15.1.0 [INFO] tweaked toml for crates.io crate im-rc 15.1.0 written to /workspace/builds/worker-5-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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 44dddb61165602c1f57c5a7380b67f103c3554046452ee89b9a16d6fec7df132 [INFO] running `Command { std: "docker" "start" "-a" "44dddb61165602c1f57c5a7380b67f103c3554046452ee89b9a16d6fec7df132", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "44dddb61165602c1f57c5a7380b67f103c3554046452ee89b9a16d6fec7df132", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "44dddb61165602c1f57c5a7380b67f103c3554046452ee89b9a16d6fec7df132", kill_on_drop: false }` [INFO] [stdout] 44dddb61165602c1f57c5a7380b67f103c3554046452ee89b9a16d6fec7df132 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] d2adf2aab6aaa5fc461e1b01b98bb02693f4d770c77c87a148d98a8e80d7b167 [INFO] running `Command { std: "docker" "start" "-a" "d2adf2aab6aaa5fc461e1b01b98bb02693f4d770c77c87a148d98a8e80d7b167", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.145 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling crossbeam-utils v0.8.15 [INFO] [stderr] Compiling io-lifetimes v1.0.11 [INFO] [stderr] Compiling rustix v0.37.19 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling typenum v1.16.0 [INFO] [stderr] Compiling libm v0.2.7 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking linux-raw-sys v0.3.8 [INFO] [stderr] Checking scopeguard v1.1.0 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking fastrand v1.9.0 [INFO] [stderr] Compiling version_check v0.9.4 [INFO] [stderr] Compiling serde v1.0.163 [INFO] [stderr] Compiling memoffset v0.8.0 [INFO] [stderr] Compiling crossbeam-epoch v0.9.14 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling rayon-core v1.11.0 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Compiling serde_json v1.0.96 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking fnv v1.0.7 [INFO] [stderr] Checking itoa v1.0.6 [INFO] [stderr] Compiling im-rc v15.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking ryu v1.0.13 [INFO] [stderr] Checking yansi v0.5.1 [INFO] [stderr] Checking diff v0.1.13 [INFO] [stderr] Checking bit-set v0.5.3 [INFO] [stderr] Checking regex-syntax v0.6.29 [INFO] [stderr] Checking unarray v0.1.4 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking either v1.8.1 [INFO] [stderr] Checking metrohash v1.0.6 [INFO] [stderr] Checking pretty_assertions v1.3.0 [INFO] [stderr] Checking crossbeam-channel v0.5.8 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking crossbeam-deque v0.8.3 [INFO] [stderr] Checking bitmaps v2.1.0 [INFO] [stderr] Checking getrandom v0.2.9 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stderr] Checking num_cpus v1.15.0 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand_xorshift v0.3.0 [INFO] [stderr] Checking rand_xoshiro v0.6.0 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking sized-chunks v0.6.5 [INFO] [stderr] Checking rayon v1.7.0 [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:341:41 [INFO] [stdout] | [INFO] [stdout] 341 | #![cfg_attr(has_specialisation, feature(specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking tempfile v3.5.0 [INFO] [stderr] Checking rusty-fork v0.3.0 [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking proptest v1.2.0 [INFO] [stderr] Compiling proptest-derive v0.3.0 [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:341:41 [INFO] [stdout] | [INFO] [stdout] 341 | #![cfg_attr(has_specialisation, feature(specialization))] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` 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: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; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `im-rc` (lib test) due to 8 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "d2adf2aab6aaa5fc461e1b01b98bb02693f4d770c77c87a148d98a8e80d7b167", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d2adf2aab6aaa5fc461e1b01b98bb02693f4d770c77c87a148d98a8e80d7b167", kill_on_drop: false }` [INFO] [stdout] d2adf2aab6aaa5fc461e1b01b98bb02693f4d770c77c87a148d98a8e80d7b167