[INFO] cloning repository https://github.com/Loptall/prcn_lib [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Loptall/prcn_lib" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLoptall%2Fprcn_lib"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLoptall%2Fprcn_lib'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 22db8bdbb137e6b4b4fe30b7cf7dad032c2b6c02 [INFO] checking Loptall/prcn_lib against try#98d5ea1855f1028095b37c493ba31093c8519d68 for pr-69548 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLoptall%2Fprcn_lib" "/workspace/builds/worker-5/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Loptall/prcn_lib on toolchain 98d5ea1855f1028095b37c493ba31093c8519d68 [INFO] running `"/workspace/cargo-home/bin/cargo" "+98d5ea1855f1028095b37c493ba31093c8519d68" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/Loptall/prcn_lib [INFO] finished tweaking git repo https://github.com/Loptall/prcn_lib [INFO] tweaked toml for git repo https://github.com/Loptall/prcn_lib written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/Loptall/prcn_lib already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+98d5ea1855f1028095b37c493ba31093c8519d68" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+98d5ea1855f1028095b37c493ba31093c8519d68" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] e2a2c82c3c3a29b58f25c3e3a7c92781a45dfa945aed9a90354dc5ee5901cf71 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "e2a2c82c3c3a29b58f25c3e3a7c92781a45dfa945aed9a90354dc5ee5901cf71"` [INFO] [stderr] Compiling proconio-derive v0.1.6 [INFO] [stderr] Checking proconio v0.3.6 [INFO] [stderr] Checking prcn_lib v0.2.2 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused imports: `BitOrAssign`, `BitXorAssign`, `BitXor` [INFO] [stderr] --> src/bitset/def.rs:2:94 [INFO] [stderr] | [INFO] [stderr] 2 | use std::ops::{Shl, ShlAssign, Shr, ShrAssign, Index, IndexMut, BitAnd, BitAndAssign, BitOr, BitOrAssign, BitXor, BitXorAssign}; [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^ ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bitset/def.rs:87:13 [INFO] [stderr] | [INFO] [stderr] 87 | let mut ret = if self.0.len() > other.0.len() { [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] error[E0716]: temporary value dropped while borrowed [INFO] [stderr] --> src/bitset/def.rs:88:14 [INFO] [stderr] | [INFO] [stderr] 87 | let mut ret = if self.0.len() > other.0.len() { [INFO] [stderr] | ------- borrow later stored here [INFO] [stderr] 88 | &sf.0[..sf.0.len() - ot.0.len()].to_vec() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use [INFO] [stderr] 89 | } else { [INFO] [stderr] | - temporary value is freed at the end of this statement [INFO] [stderr] | [INFO] [stderr] = note: consider using a `let` binding to create a longer lived value [INFO] [stderr] [INFO] [stderr] error[E0716]: temporary value dropped while borrowed [INFO] [stderr] --> src/bitset/def.rs:90:14 [INFO] [stderr] | [INFO] [stderr] 87 | let mut ret = if self.0.len() > other.0.len() { [INFO] [stderr] | ------- borrow later stored here [INFO] [stderr] ... [INFO] [stderr] 90 | &ot.0[..ot.0.len() - sf.0.len()].to_vec() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use [INFO] [stderr] 91 | }; [INFO] [stderr] | - temporary value is freed at the end of this statement [INFO] [stderr] | [INFO] [stderr] = note: consider using a `let` binding to create a longer lived value [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow `*ret` as mutable, as it is behind a `&` reference [INFO] [stderr] --> src/bitset/def.rs:100:13 [INFO] [stderr] | [INFO] [stderr] 88 | &sf.0[..sf.0.len() - ot.0.len()].to_vec() [INFO] [stderr] | ----------------------------------------- help: consider changing this to be a mutable reference: `&mut sf.0[..sf.0.len() - ot.0.len()].to_vec()` [INFO] [stderr] ... [INFO] [stderr] 100 | ret.push(i | j); [INFO] [stderr] | ^^^ `ret` is a `&` reference, so the data it refers to cannot be borrowed as mutable [INFO] [stderr] [INFO] [stderr] error: aborting due to 3 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0596, E0716. [INFO] [stderr] For more information about an error, try `rustc --explain E0596`. [INFO] [stderr] warning: unused imports: `BitOrAssign`, `BitXorAssign`, `BitXor` [INFO] [stderr] --> src/bitset/def.rs:2:94 [INFO] [stderr] | [INFO] [stderr] 2 | use std::ops::{Shl, ShlAssign, Shr, ShrAssign, Index, IndexMut, BitAnd, BitAndAssign, BitOr, BitOrAssign, BitXor, BitXorAssign}; [INFO] [stderr] | ^^^^^^^^^^^ ^^^^^^ ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] error: could not compile `prcn_lib`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bitset/def.rs:87:13 [INFO] [stderr] | [INFO] [stderr] 87 | let mut ret = if self.0.len() > other.0.len() { [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] error[E0716]: temporary value dropped while borrowed [INFO] [stderr] --> src/bitset/def.rs:88:14 [INFO] [stderr] | [INFO] [stderr] 87 | let mut ret = if self.0.len() > other.0.len() { [INFO] [stderr] | ------- borrow later stored here [INFO] [stderr] 88 | &sf.0[..sf.0.len() - ot.0.len()].to_vec() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use [INFO] [stderr] 89 | } else { [INFO] [stderr] | - temporary value is freed at the end of this statement [INFO] [stderr] | [INFO] [stderr] = note: consider using a `let` binding to create a longer lived value [INFO] [stderr] [INFO] [stderr] error[E0716]: temporary value dropped while borrowed [INFO] [stderr] --> src/bitset/def.rs:90:14 [INFO] [stderr] | [INFO] [stderr] 87 | let mut ret = if self.0.len() > other.0.len() { [INFO] [stderr] | ------- borrow later stored here [INFO] [stderr] ... [INFO] [stderr] 90 | &ot.0[..ot.0.len() - sf.0.len()].to_vec() [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ creates a temporary which is freed while still in use [INFO] [stderr] 91 | }; [INFO] [stderr] | - temporary value is freed at the end of this statement [INFO] [stderr] | [INFO] [stderr] = note: consider using a `let` binding to create a longer lived value [INFO] [stderr] [INFO] [stderr] error[E0596]: cannot borrow `*ret` as mutable, as it is behind a `&` reference [INFO] [stderr] --> src/bitset/def.rs:100:13 [INFO] [stderr] | [INFO] [stderr] 88 | &sf.0[..sf.0.len() - ot.0.len()].to_vec() [INFO] [stderr] | ----------------------------------------- help: consider changing this to be a mutable reference: `&mut sf.0[..sf.0.len() - ot.0.len()].to_vec()` [INFO] [stderr] ... [INFO] [stderr] 100 | ret.push(i | j); [INFO] [stderr] | ^^^ `ret` is a `&` reference, so the data it refers to cannot be borrowed as mutable [INFO] [stderr] [INFO] [stderr] error: aborting due to 3 previous errors [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0596, E0716. [INFO] [stderr] For more information about an error, try `rustc --explain E0596`. [INFO] [stderr] error: could not compile `prcn_lib`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "e2a2c82c3c3a29b58f25c3e3a7c92781a45dfa945aed9a90354dc5ee5901cf71"` [INFO] running `"docker" "rm" "-f" "e2a2c82c3c3a29b58f25c3e3a7c92781a45dfa945aed9a90354dc5ee5901cf71"` [INFO] [stdout] e2a2c82c3c3a29b58f25c3e3a7c92781a45dfa945aed9a90354dc5ee5901cf71