[INFO] fetching crate lain 0.5.3... [INFO] checking lain-0.5.3 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579 [INFO] extracting crate lain 0.5.3 into /workspace/builds/worker-11/source [INFO] validating manifest of crates.io crate lain 0.5.3 on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate lain 0.5.3 [INFO] finished tweaking crates.io crate lain 0.5.3 [INFO] tweaked toml for crates.io crate lain 0.5.3 written to /workspace/builds/worker-11/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] dbca649a788c682440f28bfc4dcde430f8d6fda55c681bd5e3704c969c791cb7 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "dbca649a788c682440f28bfc4dcde430f8d6fda55c681bd5e3704c969c791cb7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dbca649a788c682440f28bfc4dcde430f8d6fda55c681bd5e3704c969c791cb7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dbca649a788c682440f28bfc4dcde430f8d6fda55c681bd5e3704c969c791cb7", kill_on_drop: false }` [INFO] [stdout] dbca649a788c682440f28bfc4dcde430f8d6fda55c681bd5e3704c969c791cb7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0c4c8ebd7e8d1dd0e72abcf1f0de016cd84accc4c92b64ada983aaf81637913c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "0c4c8ebd7e8d1dd0e72abcf1f0de016cd84accc4c92b64ada983aaf81637913c", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Compiling proc-macro-hack-impl v0.4.2 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling cfg-if v0.1.10 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling field-offset v0.3.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling num-bigint v0.2.6 [INFO] [stderr] Compiling num-rational v0.2.4 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling memoffset v0.5.6 [INFO] [stderr] Compiling proc-macro-hack v0.4.2 [INFO] [stderr] Compiling mashup-impl v0.1.12 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.2 [INFO] [stderr] Checking rand_pcg v0.2.1 [INFO] [stderr] Compiling mashup v0.1.12 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Compiling lain_derive v0.5.3 [INFO] [stderr] Compiling num-derive v0.2.5 [INFO] [stderr] Checking num v0.2.1 [INFO] [stderr] Checking lain v0.5.3 (/opt/rustwide/workdir) [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:101:12 [INFO] [stdout] | [INFO] [stdout] 101 | #![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: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:101:12 [INFO] [stdout] | [INFO] [stdout] 101 | #![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: variable does not need to be mutable [INFO] [stdout] --> src/mutatable.rs:319:13 [INFO] [stdout] | [INFO] [stdout] 319 | let mut constraints = constraints.and_then(|c| { [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/mutatable.rs:635:25 [INFO] [stdout] | [INFO] [stdout] 635 | let mut new_item = T::new_fuzzed(mutator, constraints); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/new_fuzzed.rs:777:25 [INFO] [stdout] | [INFO] [stdout] 777 | let mut per_item_max_size: Option = constraints.and_then(|c| c.max_size.as_ref().and_then(|size| Some(*size / ... [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] ... [INFO] [stdout] 858 | / impl_new_fuzzed_array!( [INFO] [stdout] 859 | | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, [INFO] [stdout] 860 | | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, [INFO] [stdout] 861 | | 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 [INFO] [stdout] 862 | | ); [INFO] [stdout] | |__- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/new_fuzzed.rs:831:25 [INFO] [stdout] | [INFO] [stdout] 831 | let mut per_item_max_size: Option = constraints.and_then(|c| c.max_size.as_ref().and_then(|size| Some(*size / ... [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] ... [INFO] [stdout] 858 | / impl_new_fuzzed_array!( [INFO] [stdout] 859 | | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, [INFO] [stdout] 860 | | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, [INFO] [stdout] 861 | | 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 [INFO] [stdout] 862 | | ); [INFO] [stdout] | |__- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/mutatable.rs:319:13 [INFO] [stdout] | [INFO] [stdout] 319 | let mut constraints = constraints.and_then(|c| { [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/mutatable.rs:635:25 [INFO] [stdout] | [INFO] [stdout] 635 | let mut new_item = T::new_fuzzed(mutator, constraints); [INFO] [stdout] | ----^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/new_fuzzed.rs:777:25 [INFO] [stdout] | [INFO] [stdout] 777 | let mut per_item_max_size: Option = constraints.and_then(|c| c.max_size.as_ref().and_then(|size| Some(*size / ... [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] ... [INFO] [stdout] 858 | / impl_new_fuzzed_array!( [INFO] [stdout] 859 | | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, [INFO] [stdout] 860 | | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, [INFO] [stdout] 861 | | 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 [INFO] [stdout] 862 | | ); [INFO] [stdout] | |__- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/new_fuzzed.rs:831:25 [INFO] [stdout] | [INFO] [stdout] 831 | let mut per_item_max_size: Option = constraints.and_then(|c| c.max_size.as_ref().and_then(|size| Some(*size / ... [INFO] [stdout] | ----^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] ... [INFO] [stdout] 858 | / impl_new_fuzzed_array!( [INFO] [stdout] 859 | | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, [INFO] [stdout] 860 | | 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, [INFO] [stdout] 861 | | 51, 52, 53, 54, 55, 56, 57, 58, 59, 60 [INFO] [stdout] 862 | | ); [INFO] [stdout] | |__- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 41.42s [INFO] running `Command { std: "docker" "inspect" "0c4c8ebd7e8d1dd0e72abcf1f0de016cd84accc4c92b64ada983aaf81637913c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0c4c8ebd7e8d1dd0e72abcf1f0de016cd84accc4c92b64ada983aaf81637913c", kill_on_drop: false }` [INFO] [stdout] 0c4c8ebd7e8d1dd0e72abcf1f0de016cd84accc4c92b64ada983aaf81637913c