[INFO] cloning repository https://github.com/maiso/RustCursus [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/maiso/RustCursus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaiso%2FRustCursus", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaiso%2FRustCursus'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 581e5238a37133894c462e1774150ffe6b4b421c [INFO] checking maiso/RustCursus against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmaiso%2FRustCursus" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/maiso/RustCursus on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/maiso/RustCursus [INFO] finished tweaking git repo https://github.com/maiso/RustCursus [INFO] tweaked toml for git repo https://github.com/maiso/RustCursus written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/maiso/RustCursus already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9d4f201396b1fcda560180fa4d801911fd299770bcd3067511606f23ce92d561 [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" "9d4f201396b1fcda560180fa4d801911fd299770bcd3067511606f23ce92d561", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9d4f201396b1fcda560180fa4d801911fd299770bcd3067511606f23ce92d561", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d4f201396b1fcda560180fa4d801911fd299770bcd3067511606f23ce92d561", kill_on_drop: false }` [INFO] [stdout] 9d4f201396b1fcda560180fa4d801911fd299770bcd3067511606f23ce92d561 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 574266e06d27a25bda09f59df63f70bfb74ba42c2d825a82bad7a2bd0ecf24b4 [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" "574266e06d27a25bda09f59df63f70bfb74ba42c2d825a82bad7a2bd0ecf24b4", kill_on_drop: false }` [INFO] [stderr] Checking rand_core v0.4.0 [INFO] [stderr] Compiling autocfg v0.1.2 [INFO] [stderr] Compiling libc v0.2.48 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling num-traits v0.2.6 [INFO] [stderr] Checking remove_dir_all v0.5.1 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Compiling byteorder v1.3.1 [INFO] [stderr] Checking bit-vec v0.5.0 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking bit-set v0.5.0 [INFO] [stderr] Checking regex-syntax v0.6.5 [INFO] [stderr] Checking rand_core v0.3.1 [INFO] [stderr] Checking rand_jitter v0.1.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking rand_isaac v0.1.1 [INFO] [stderr] Checking rand_xorshift v0.1.1 [INFO] [stderr] Checking rand_hc v0.1.0 [INFO] [stderr] Compiling rand_chacha v0.1.1 [INFO] [stderr] Compiling rand v0.6.5 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling rand_pcg v0.1.1 [INFO] [stderr] Checking rand_os v0.1.2 [INFO] [stderr] Checking wait-timeout v0.1.5 [INFO] [stderr] Checking rand v0.5.6 [INFO] [stderr] Checking tempfile v3.0.5 [INFO] [stderr] Checking rusty-fork v0.2.1 [INFO] [stderr] Checking proptest v0.8.7 [INFO] [stderr] Checking queue v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/main.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Read, Write }; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/main.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::{self, BufReader}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:65:38 [INFO] [stdout] | [INFO] [stdout] 65 | MyCommand::InvalidCommand{reason : x} => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:68:40 [INFO] [stdout] | [INFO] [stdout] 68 | MyCommand::InvalidParameter{reason : x} => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/main.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Read, Write }; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `self` [INFO] [stdout] --> src/main.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use std::io::{self, BufReader}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:65:38 [INFO] [stdout] | [INFO] [stdout] 65 | MyCommand::InvalidCommand{reason : x} => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/main.rs:68:40 [INFO] [stdout] | [INFO] [stdout] 68 | MyCommand::InvalidParameter{reason : x} => { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 17.31s [INFO] running `Command { std: "docker" "inspect" "574266e06d27a25bda09f59df63f70bfb74ba42c2d825a82bad7a2bd0ecf24b4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "574266e06d27a25bda09f59df63f70bfb74ba42c2d825a82bad7a2bd0ecf24b4", kill_on_drop: false }` [INFO] [stdout] 574266e06d27a25bda09f59df63f70bfb74ba42c2d825a82bad7a2bd0ecf24b4