[INFO] crate shared_slice 0.0.4 is already in cache [INFO] testing shared_slice-0.0.4 against beta-2020-07-24 for beta-1.46-1 [INFO] extracting crate shared_slice 0.0.4 into /workspace/builds/worker-0/source [INFO] validating manifest of crates.io crate shared_slice 0.0.4 on toolchain beta-2020-07-24 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate shared_slice 0.0.4 [INFO] finished tweaking crates.io crate shared_slice 0.0.4 [INFO] tweaked toml for crates.io crate shared_slice 0.0.4 written to /workspace/builds/worker-0/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 222bb745d8e5f6ff7e261f739aa26754b4e860f12e75d5f3eb735aaf7968da07 [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" "222bb745d8e5f6ff7e261f739aa26754b4e860f12e75d5f3eb735aaf7968da07", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "222bb745d8e5f6ff7e261f739aa26754b4e860f12e75d5f3eb735aaf7968da07", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "222bb745d8e5f6ff7e261f739aa26754b4e860f12e75d5f3eb735aaf7968da07", kill_on_drop: false }` [INFO] [stdout] 222bb745d8e5f6ff7e261f739aa26754b4e860f12e75d5f3eb735aaf7968da07 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 19f0542e56719b6242c001bc60a2caae1c3636002e5da5cd2e69c2b43ee07d0c [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" "19f0542e56719b6242c001bc60a2caae1c3636002e5da5cd2e69c2b43ee07d0c", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling shared_slice v0.0.4 (/opt/rustwide/workdir) [INFO] [stdout] error[E0259]: the name `core` is defined multiple times [INFO] [stdout] --> src/lib.rs:79:1 [INFO] [stdout] | [INFO] [stdout] 79 | extern crate core; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ `core` reimported here [INFO] [stdout] | [INFO] [stdout] = note: `core` must be defined only once in the type namespace of this module [INFO] [stdout] help: you can use `as` to change the binding name of the import [INFO] [stdout] | [INFO] [stdout] 79 | extern crate core as other_core; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `alloc::arc` [INFO] [stdout] --> src/arc.rs:8:12 [INFO] [stdout] | [INFO] [stdout] 8 | use alloc::arc::{Arc, Weak}; [INFO] [stdout] | ^^^ could not find `arc` in `alloc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:1:1 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(no_std)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:76:1 [INFO] [stdout] | [INFO] [stdout] 76 | #![feature(core, alloc)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `core::prelude::*` [INFO] [stdout] --> src/rc.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use core::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `core::prelude::*` [INFO] [stdout] --> src/arc.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use core::prelude::*; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `downgrade` found for struct `alloc::rc::Rc>` in the current scope [INFO] [stdout] --> src/rc.rs:73:33 [INFO] [stdout] | [INFO] [stdout] 73 | counts: self.counts.downgrade() [INFO] [stdout] | ------------^^^^^^^^^ [INFO] [stdout] | | | [INFO] [stdout] | | this is an associated function, not a method [INFO] [stdout] | help: use associated function syntax instead: `alloc::rc::Rc::>::downgrade` [INFO] [stdout] | [INFO] [stdout] = note: found the following associated functions; to be used as methods, functions must have a `self` parameter [INFO] [stdout] = note: the candidate is defined in an impl for the type `alloc::rc::Rc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 5 previous errors; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0259, E0432, E0554, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0259`. [INFO] [stdout] [INFO] [stderr] error: could not compile `shared_slice`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "19f0542e56719b6242c001bc60a2caae1c3636002e5da5cd2e69c2b43ee07d0c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "19f0542e56719b6242c001bc60a2caae1c3636002e5da5cd2e69c2b43ee07d0c", kill_on_drop: false }` [INFO] [stdout] 19f0542e56719b6242c001bc60a2caae1c3636002e5da5cd2e69c2b43ee07d0c