[INFO] cloning repository https://github.com/sigpher/trpl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sigpher/trpl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Ftrpl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Ftrpl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 979a1bad404d01b49d6d53a313f7e1ebf39d7bbc
[INFO] checking sigpher/trpl against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigpher%2Ftrpl" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sigpher/trpl
[INFO] finished tweaking git repo https://github.com/sigpher/trpl
[INFO] tweaked toml for git repo https://github.com/sigpher/trpl written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sigpher/trpl on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sigpher/trpl 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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab06bca940c24675af48ce50eb22aa11309dc787f14d1a7ac9a1b36d7994d692
[INFO] running `Command { std: "docker" "start" "-a" "ab06bca940c24675af48ce50eb22aa11309dc787f14d1a7ac9a1b36d7994d692", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab06bca940c24675af48ce50eb22aa11309dc787f14d1a7ac9a1b36d7994d692", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab06bca940c24675af48ce50eb22aa11309dc787f14d1a7ac9a1b36d7994d692", kill_on_drop: false }`
[INFO] [stdout] ab06bca940c24675af48ce50eb22aa11309dc787f14d1a7ac9a1b36d7994d692
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec07e0af96bfe7259d16e95479593813800033cd32f2959212daadb2f60fea6b
[INFO] running `Command { std: "docker" "start" "-a" "ec07e0af96bfe7259d16e95479593813800033cd32f2959212daadb2f60fea6b", kill_on_drop: false }`
[INFO] [stderr]     Checking ch10 v0.1.0 (/opt/rustwide/workdir/ch10)
[INFO] [stderr]     Checking ch05 v0.1.0 (/opt/rustwide/workdir/ch05)
[INFO] [stderr]     Checking ch11 v0.1.0 (/opt/rustwide/workdir/ch11)
[INFO] [stderr]     Checking ch12 v0.1.0 (/opt/rustwide/workdir/ch12)
[INFO] [stderr]     Checking ch15 v0.1.0 (/opt/rustwide/workdir/ch15)
[INFO] [stderr]     Checking ch13 v0.1.0 (/opt/rustwide/workdir/ch13)
[INFO] [stderr]     Checking ch03 v0.1.0 (/opt/rustwide/workdir/ch03)
[INFO] [stderr]     Checking ch08 v0.1.0 (/opt/rustwide/workdir/ch08)
[INFO] [stderr]     Checking ch07 v0.1.0 (/opt/rustwide/workdir/ch07)
[INFO] [stderr]     Checking ch09 v0.1.0 (/opt/rustwide/workdir/ch09)
[INFO] [stderr]     Checking ch01 v0.1.0 (/opt/rustwide/workdir/ch01)
[INFO] [stderr]     Checking ch02 v0.1.0 (/opt/rustwide/workdir/ch02)
[INFO] [stderr]     Checking ch06 v0.1.0 (/opt/rustwide/workdir/ch06)
[INFO] [stderr]     Checking ch14 v0.1.0 (/opt/rustwide/workdir/ch14)
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> ch15/src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let d = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> ch15/src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let j = &mut i;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `i` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> ch15/src/main.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let j = &mut i;
[INFO] [stdout]    |             ^^^^^^ cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let mut i = 4;
[INFO] [stdout]    |         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ch15` (bin "ch15") due to 1 previous error; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `d`
[INFO] [stdout]   --> ch15/src/main.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let d = CustomSmartPointer {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_d`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]   --> ch15/src/main.rs:58:9
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let j = &mut i;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `i` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> ch15/src/main.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |     let j = &mut i;
[INFO] [stdout]    |             ^^^^^^ cannot borrow as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be mutable
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let mut i = 4;
[INFO] [stdout]    |         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ch15` (bin "ch15" test) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "ec07e0af96bfe7259d16e95479593813800033cd32f2959212daadb2f60fea6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec07e0af96bfe7259d16e95479593813800033cd32f2959212daadb2f60fea6b", kill_on_drop: false }`
[INFO] [stdout] ec07e0af96bfe7259d16e95479593813800033cd32f2959212daadb2f60fea6b