[INFO] fetching crate im-rc 15.0.0... [INFO] checking im-rc-15.0.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050 [INFO] extracting crate im-rc 15.0.0 into /workspace/builds/worker-9/source [INFO] validating manifest of crates.io crate im-rc 15.0.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate im-rc 15.0.0 [INFO] finished tweaking crates.io crate im-rc 15.0.0 [INFO] tweaked toml for crates.io crate im-rc 15.0.0 written to /workspace/builds/worker-9/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8d3479dbba2b4b4b47010b4067e44ac50894bb50772952c927935a5aad3f85d8 [INFO] running `Command { std: "docker" "start" "-a" "8d3479dbba2b4b4b47010b4067e44ac50894bb50772952c927935a5aad3f85d8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8d3479dbba2b4b4b47010b4067e44ac50894bb50772952c927935a5aad3f85d8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8d3479dbba2b4b4b47010b4067e44ac50894bb50772952c927935a5aad3f85d8", kill_on_drop: false }` [INFO] [stdout] 8d3479dbba2b4b4b47010b4067e44ac50894bb50772952c927935a5aad3f85d8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 895dbab0409713d3faa96273cfa54943e7a2e2c5cc4e741b4ad99c844bc91ae8 [INFO] running `Command { std: "docker" "start" "-a" "895dbab0409713d3faa96273cfa54943e7a2e2c5cc4e741b4ad99c844bc91ae8", kill_on_drop: false }` [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking difference v2.0.0 [INFO] [stderr] Checking metrohash v1.0.6 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling im-rc v15.0.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking getrandom v0.1.16 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking rand_os v0.1.3 [INFO] [stderr] Checking wait-timeout v0.2.0 [INFO] [stderr] Checking bitmaps v2.1.0 [INFO] [stderr] Checking serde_json v1.0.64 [INFO] [stderr] Checking pretty_assertions v0.6.1 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand_pcg v0.2.1 [INFO] [stderr] Checking rand_xoshiro v0.4.0 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking tempfile v3.2.0 [INFO] [stderr] Checking rusty-fork v0.2.2 [INFO] [stderr] Checking proptest v0.9.6 [INFO] [stderr] Checking sized-chunks v0.6.5 [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: `#[warn(incomplete_features)]` on by default [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] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/vector/mod.rs:986:13 [INFO] [stdout] | [INFO] [stdout] 986 | replace(self, other); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling proptest-derive v0.1.2 [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: `#[warn(incomplete_features)]` on by default [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] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/vector/mod.rs:2532:43 [INFO] [stdout] | [INFO] [stdout] 2532 | assert!(!input.ptr_eq(&inp2), len); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: add a "{}" format string to Display the message [INFO] [stdout] | [INFO] [stdout] 2532 | assert!(!input.ptr_eq(&inp2), "{}", len); [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/vector/mod.rs:986:13 [INFO] [stdout] | [INFO] [stdout] 986 | replace(self, other); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 22.96s [INFO] running `Command { std: "docker" "inspect" "895dbab0409713d3faa96273cfa54943e7a2e2c5cc4e741b4ad99c844bc91ae8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "895dbab0409713d3faa96273cfa54943e7a2e2c5cc4e741b4ad99c844bc91ae8", kill_on_drop: false }` [INFO] [stdout] 895dbab0409713d3faa96273cfa54943e7a2e2c5cc4e741b4ad99c844bc91ae8