[INFO] cloning repository https://github.com/Aegonek/schoolduler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Aegonek/schoolduler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAegonek%2Fschoolduler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAegonek%2Fschoolduler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 591ee15997c6691e5074229c45c41fffa0644c5d
[INFO] checking Aegonek/schoolduler against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAegonek%2Fschoolduler" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Aegonek/schoolduler on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Aegonek/schoolduler
[INFO] finished tweaking git repo https://github.com/Aegonek/schoolduler
[INFO] tweaked toml for git repo https://github.com/Aegonek/schoolduler written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Aegonek/schoolduler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded once_cell v1.12.1
[INFO] [stderr]   Downloaded itertools v0.10.4
[INFO] [stderr]   Downloaded xlsxwriter v0.4.0
[INFO] [stderr]   Downloaded libxlsxwriter-sys v1.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae944b54d672124139520c4740a06924bc66b495cfb222cc79b21397c02392a0
[INFO] running `Command { std: "docker" "start" "-a" "ae944b54d672124139520c4740a06924bc66b495cfb222cc79b21397c02392a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae944b54d672124139520c4740a06924bc66b495cfb222cc79b21397c02392a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae944b54d672124139520c4740a06924bc66b495cfb222cc79b21397c02392a0", kill_on_drop: false }`
[INFO] [stdout] ae944b54d672124139520c4740a06924bc66b495cfb222cc79b21397c02392a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fc789633dd3fc5f2adb48429c875dcc714b7ea753e9bf0edb4d9835998b1678
[INFO] running `Command { std: "docker" "start" "-a" "6fc789633dd3fc5f2adb48429c875dcc714b7ea753e9bf0edb4d9835998b1678", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]     Checking once_cell v1.12.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clang-sys v1.3.3
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling which v4.3.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling serde v1.0.144
[INFO] [stderr]    Compiling serde_derive v1.0.144
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling unsafe-libyaml v0.2.4
[INFO] [stderr]    Compiling itoa v1.0.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking textwrap v0.15.0
[INFO] [stderr]    Compiling time-macros v0.2.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking itertools v0.10.4
[INFO] [stderr]    Compiling serde_yaml v0.9.13
[INFO] [stderr]    Compiling clap_derive v3.2.18
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling schoolduler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling libxlsxwriter-sys v1.1.4
[INFO] [stderr]     Checking clap v3.2.21
[INFO] [stderr]     Checking time v0.3.14
[INFO] [stderr]     Checking xlsxwriter v0.4.0
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/exts/par_iter.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 |     convert::{TryFrom, TryInto},
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/exts/par_iter.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     convert::{TryFrom, TryInto},
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/utils/num.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HashCode` is imported redundantly
[INFO] [stdout]  --> src/algen/solution/fitness_ops.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::*;
[INFO] [stdout]   |     -------- the item `HashCode` is already imported here
[INFO] [stdout] 6 | use crate::logging::comm::Severity;
[INFO] [stdout] 7 | use crate::utils::hash::HashCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/exts/par_iter.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 |     convert::{TryFrom, TryInto},
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryInto` is imported redundantly
[INFO] [stdout]  --> src/exts/par_iter.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 |     convert::{TryFrom, TryInto},
[INFO] [stdout]   |                        ^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryInto` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/utils/num.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num;
[INFO] [stdout]   |     ^^^ the item `num` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]   --> src/algen/encoding.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |     use serde_json;
[INFO] [stdout]    |         ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `HashCode` is imported redundantly
[INFO] [stdout]  --> src/algen/solution/fitness_ops.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use super::*;
[INFO] [stdout]   |     -------- the item `HashCode` is already imported here
[INFO] [stdout] 6 | use crate::logging::comm::Severity;
[INFO] [stdout] 7 | use crate::utils::hash::HashCode;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]  --> src/school/tests.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `io_error_other` has been stable since 1.74.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mixed_integer_ops, io_error_other)]
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `mixed_integer_ops` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mixed_integer_ops, io_error_other)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `io_error_other` has been stable since 1.74.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mixed_integer_ops, io_error_other)]
[INFO] [stdout]   |                               ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `mixed_integer_ops` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(mixed_integer_ops, io_error_other)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.40s
[INFO] running `Command { std: "docker" "inspect" "6fc789633dd3fc5f2adb48429c875dcc714b7ea753e9bf0edb4d9835998b1678", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fc789633dd3fc5f2adb48429c875dcc714b7ea753e9bf0edb4d9835998b1678", kill_on_drop: false }`
[INFO] [stdout] 6fc789633dd3fc5f2adb48429c875dcc714b7ea753e9bf0edb4d9835998b1678