[INFO] updating cached repository PaulGrandperrin/playground [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/PaulGrandperrin/playground [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/PaulGrandperrin/playground" "work/ex/beta-1.38-1/sources/1.37.0/gh/PaulGrandperrin/playground"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/PaulGrandperrin/playground'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/PaulGrandperrin/playground" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PaulGrandperrin/playground"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PaulGrandperrin/playground'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 572ff41ccdfa72771a37fd9ab89f37e9b5451041 [INFO] sha for GitHub repo PaulGrandperrin/playground: 572ff41ccdfa72771a37fd9ab89f37e9b5451041 [INFO] validating manifest of PaulGrandperrin/playground on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of PaulGrandperrin/playground on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing PaulGrandperrin/playground [INFO] finished frobbing PaulGrandperrin/playground [INFO] frobbed toml for PaulGrandperrin/playground written to work/ex/beta-1.38-1/sources/1.37.0/gh/PaulGrandperrin/playground/Cargo.toml [INFO] started frobbing PaulGrandperrin/playground [INFO] finished frobbing PaulGrandperrin/playground [INFO] frobbed toml for PaulGrandperrin/playground written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PaulGrandperrin/playground/Cargo.toml [INFO] crate PaulGrandperrin/playground already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing PaulGrandperrin/playground against 1.37.0 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/PaulGrandperrin/playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"` [INFO] [stdout] 9cd0b40ee8cad680eddc370871705110d76e29dd902caa56e8e48b32f3220134 [INFO] running `"docker" "start" "-a" "9cd0b40ee8cad680eddc370871705110d76e29dd902caa56e8e48b32f3220134"` [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling backtrace v0.3.26 [INFO] [stderr] Compiling num-iter v0.1.39 [INFO] [stderr] Compiling bincode v1.1.4 [INFO] [stderr] Compiling term v0.5.2 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling failure v0.1.5 [INFO] [stderr] Compiling color-backtrace v0.1.3 [INFO] [stderr] Compiling exitfailure v0.5.1 [INFO] [stderr] Compiling num-complex v0.2.1 [INFO] [stderr] Compiling num-bigint v0.2.2 [INFO] [stderr] Compiling num-rational v0.2.1 [INFO] [stderr] Compiling num v0.2.0 [INFO] [stderr] Compiling playground v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | / #![feature( [INFO] [stderr] 2 | | trivial_bounds, [INFO] [stderr] 3 | | try_from, [INFO] [stderr] 4 | | non_exhaustive, [INFO] [stderr] ... | [INFO] [stderr] 8 | | never_type [INFO] [stderr] 9 | | )] [INFO] [stderr] | |__^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::collections::BTreeMap` [INFO] [stderr] --> src/algorithm.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::collections::BTreeMap; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Insert` [INFO] [stderr] --> src/algorithm.rs:12:62 [INFO] [stderr] | [INFO] [stderr] 12 | use crate::non_volatile::object::tree::{BufferNode, Message, Insert}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::common::ConstObjType` [INFO] [stderr] --> src/algorithm.rs:16:9 [INFO] [stderr] | [INFO] [stderr] 16 | use crate::common::ConstObjType; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/algorithm.rs:302:20 [INFO] [stderr] | [INFO] [stderr] 302 | if (num_of_candidates_for_cur_child > BUF_SIZE) { // BIG TODO find a better heuristic [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_parens)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::common::ConstObjType` [INFO] [stderr] --> src/context.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use crate::common::ConstObjType; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::non_volatile::object::object_type::ObjectType` [INFO] [stderr] --> src/context.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use crate::non_volatile::object::object_type::ObjectType; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `LeafNode`, `LeafType`, `NodeEntry` [INFO] [stderr] --> src/context.rs:6:41 [INFO] [stderr] | [INFO] [stderr] 6 | use crate::non_volatile::object::tree::{LeafNode, LeafType, NodeEntry, Message, Insert}; [INFO] [stderr] | ^^^^^^^^ ^^^^^^^^ ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::ops::Deref` [INFO] [stderr] --> src/context.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::ops::Deref; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::rc::Rc` [INFO] [stderr] --> src/context.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::rc::Rc; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::borrow::Borrow` [INFO] [stderr] --> src/non_volatile/object/any_rc_object.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use std::borrow::Borrow; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `TryInto` [INFO] [stderr] --> src/non_volatile/object/any_rc_object.rs:7:29 [INFO] [stderr] | [INFO] [stderr] 7 | use std::convert::{TryFrom, TryInto}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BufMut`, `Buf` [INFO] [stderr] --> src/non_volatile/object/object_pointer.rs:6:13 [INFO] [stderr] | [INFO] [stderr] 6 | use bytes::{Buf, BufMut}; [INFO] [stderr] | ^^^ ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Cursor` [INFO] [stderr] --> src/non_volatile/object/object_pointer.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::io::Cursor; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::marker::PhantomData` [INFO] [stderr] --> src/non_volatile/object/tree.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::marker::PhantomData; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Deserialize`, `Deserializer`, `SeqAccess`, `Visitor`, `self` [INFO] [stderr] --> src/non_volatile/object/tree.rs:7:17 [INFO] [stderr] | [INFO] [stderr] 7 | use serde::de::{self, Deserialize, Deserializer, SeqAccess, Visitor}; [INFO] [stderr] | ^^^^ ^^^^^^^^^^^ ^^^^^^^^^^^^ ^^^^^^^^^ ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `SerializeStruct`, `Serialize`, `Serializer` [INFO] [stderr] --> src/non_volatile/object/tree.rs:8:18 [INFO] [stderr] | [INFO] [stderr] 8 | use serde::ser::{Serialize, SerializeStruct, Serializer}; [INFO] [stderr] | ^^^^^^^^^ ^^^^^^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::mem` [INFO] [stderr] --> src/non_volatile/object/tree/buffer_node.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::mem; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BufMut`, `Buf` [INFO] [stderr] --> src/non_volatile/object/uberblock.rs:4:13 [INFO] [stderr] | [INFO] [stderr] 4 | use bytes::{Buf, BufMut}; [INFO] [stderr] | ^^^ ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `failure::format_err` [INFO] [stderr] --> src/non_volatile/object/uberblock.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use failure::format_err; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::Cursor` [INFO] [stderr] --> src/non_volatile/object/uberblock.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::io::Cursor; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::mem` [INFO] [stderr] --> src/non_volatile/object/uberblock.rs:8:5 [INFO] [stderr] | [INFO] [stderr] 8 | use std::mem; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/main.rs:79:31 [INFO] [stderr] | [INFO] [stderr] 79 | fn process_sortedmap(sm: &mut SortedMap<&str, &str>) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn SortedMap<&str, &str>` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(bare_trait_objects)] on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable statement [INFO] [stderr] --> src/main.rs:31:5 [INFO] [stderr] | [INFO] [stderr] 31 | ctx.commit(); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unreachable_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `crate::common::ConstObjType` [INFO] [stderr] --> src/non_volatile/manager.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use crate::common::ConstObjType; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `playground`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "9cd0b40ee8cad680eddc370871705110d76e29dd902caa56e8e48b32f3220134"` [INFO] running `"docker" "rm" "-f" "9cd0b40ee8cad680eddc370871705110d76e29dd902caa56e8e48b32f3220134"` [INFO] [stdout] 9cd0b40ee8cad680eddc370871705110d76e29dd902caa56e8e48b32f3220134