[INFO] fetching crate libcodejam 0.2.0... [INFO] testing libcodejam-0.2.0 against 1.55.0 for beta-1.56-1 [INFO] extracting crate libcodejam 0.2.0 into /workspace/builds/worker-5/source [INFO] validating manifest of crates.io crate libcodejam 0.2.0 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate libcodejam 0.2.0 [INFO] finished tweaking crates.io crate libcodejam 0.2.0 [INFO] tweaked toml for crates.io crate libcodejam 0.2.0 written to /workspace/builds/worker-5/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ecb0a4e06ac703f4946e0297aeb42ddd7468273313b521bf831fcd1fcf9cd281 [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" "ecb0a4e06ac703f4946e0297aeb42ddd7468273313b521bf831fcd1fcf9cd281", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ecb0a4e06ac703f4946e0297aeb42ddd7468273313b521bf831fcd1fcf9cd281", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ecb0a4e06ac703f4946e0297aeb42ddd7468273313b521bf831fcd1fcf9cd281", kill_on_drop: false }` [INFO] [stdout] ecb0a4e06ac703f4946e0297aeb42ddd7468273313b521bf831fcd1fcf9cd281 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ab6ed9f112f31e103e2f438afa82bd2427105452a54abb8d8fec5f645f1aa945 [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" "ab6ed9f112f31e103e2f438afa82bd2427105452a54abb8d8fec5f645f1aa945", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v0.3.8 [INFO] [stderr] Compiling parking_lot_core v0.3.1 [INFO] [stderr] Compiling ordered-float v1.1.1 [INFO] [stderr] Compiling parking_lot v0.6.4 [INFO] [stderr] Compiling quote v0.5.2 [INFO] [stderr] Compiling crossbeam-channel v0.2.6 [INFO] [stderr] Compiling syn v0.13.11 [INFO] [stderr] Compiling crossbeam v0.4.1 [INFO] [stderr] Compiling derive_more v0.11.0 [INFO] [stderr] Compiling libcodejam v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(try_trait)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(trusted_len)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stdout] --> src/lib.rs:3:1 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(never_type)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/data/global.rs:28:32 [INFO] [stdout] | [INFO] [stdout] 28 | fn cause(&self) -> Option<&Error> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/data/group.rs:37:32 [INFO] [stdout] | [INFO] [stdout] 37 | fn cause(&self) -> Option<&Error> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/data/group.rs:111:16 [INFO] [stdout] | [INFO] [stdout] 111 | error: Box, [INFO] [stdout] | ^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/data/group.rs:134:32 [INFO] [stdout] | [INFO] [stdout] 134 | fn cause(&self) -> Option<&Error> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/data/group.rs:178:16 [INFO] [stdout] | [INFO] [stdout] 178 | error: Box, [INFO] [stdout] | ^^^^^^^^^^^^ help: use `dyn`: `dyn Error + Send` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/data/group.rs:201:32 [INFO] [stdout] | [INFO] [stdout] 201 | fn cause(&self) -> Option<&Error> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/executor.rs:60:32 [INFO] [stdout] | [INFO] [stdout] 60 | fn cause(&self) -> Option<&Error> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/executor.rs:101:32 [INFO] [stdout] | [INFO] [stdout] 101 | fn cause(&self) -> Option<&Error> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tokens.rs:31:32 [INFO] [stdout] | [INFO] [stdout] 31 | fn cause(&self) -> Option<&Error> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/tokens.rs:57:32 [INFO] [stdout] | [INFO] [stdout] 57 | fn cause(&self) -> Option<&Error> { [INFO] [stdout] | ^^^^^ help: use `dyn`: `dyn Error` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see issue #80165 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2' [INFO] [stdout] --> src/tokens.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::ops::Try; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #84277 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2' [INFO] [stdout] --> src/tokens.rs:116:12 [INFO] [stdout] | [INFO] [stdout] 116 | R: Try, [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #84277 for more information [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0220]: associated type `Ok` not found for `Try` [INFO] [stdout] --> src/tokens.rs:116:16 [INFO] [stdout] | [INFO] [stdout] 116 | R: Try, [INFO] [stdout] | ^^ associated type `Ok` not found [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 6 previous errors; 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0220, E0554, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0220`. [INFO] [stdout] [INFO] [stderr] error: could not compile `libcodejam` due to 7 previous errors; 10 warnings emitted [INFO] running `Command { std: "docker" "inspect" "ab6ed9f112f31e103e2f438afa82bd2427105452a54abb8d8fec5f645f1aa945", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ab6ed9f112f31e103e2f438afa82bd2427105452a54abb8d8fec5f645f1aa945", kill_on_drop: false }` [INFO] [stdout] ab6ed9f112f31e103e2f438afa82bd2427105452a54abb8d8fec5f645f1aa945