[INFO] fetching crate wei-log 0.2.12...
[INFO] testing wei-log-0.2.12 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate wei-log 0.2.12 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate wei-log 0.2.12
[INFO] finished tweaking crates.io crate wei-log 0.2.12
[INFO] tweaked toml for crates.io crate wei-log 0.2.12 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wei-log 0.2.12 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 37 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f506b7f19ddaa4ab1c7505f52ad2cdcd488c3d9ecb9d43d6c58b744bb7c6509
[INFO] running `Command { std: "docker" "start" "-a" "0f506b7f19ddaa4ab1c7505f52ad2cdcd488c3d9ecb9d43d6c58b744bb7c6509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f506b7f19ddaa4ab1c7505f52ad2cdcd488c3d9ecb9d43d6c58b744bb7c6509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f506b7f19ddaa4ab1c7505f52ad2cdcd488c3d9ecb9d43d6c58b744bb7c6509", kill_on_drop: false }`
[INFO] [stdout] 0f506b7f19ddaa4ab1c7505f52ad2cdcd488c3d9ecb9d43d6c58b744bb7c6509
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4be7b1f1d831b800160c64a67b6f40b07c0314e35d4b072bf2df6c078d2b08b7
[INFO] running `Command { std: "docker" "start" "-a" "4be7b1f1d831b800160c64a67b6f40b07c0314e35d4b072bf2df6c078d2b08b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling wei-log v0.2.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `write_and_prune_file` is never used
[INFO] [stdout]    --> src/lib.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn write_and_prune_file(path: &str, content: &str, max_lines: usize) -> std::io::Result<()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "4be7b1f1d831b800160c64a67b6f40b07c0314e35d4b072bf2df6c078d2b08b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4be7b1f1d831b800160c64a67b6f40b07c0314e35d4b072bf2df6c078d2b08b7", kill_on_drop: false }`
[INFO] [stdout] 4be7b1f1d831b800160c64a67b6f40b07c0314e35d4b072bf2df6c078d2b08b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf7cf34b70dacffaa8940a027bdc6f776da0c6e26cb57d7f0f2ce8efd5075046
[INFO] running `Command { std: "docker" "start" "-a" "bf7cf34b70dacffaa8940a027bdc6f776da0c6e26cb57d7f0f2ce8efd5075046", kill_on_drop: false }`
[INFO] [stdout] warning: function `write_and_prune_file` is never used
[INFO] [stdout]    --> src/lib.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn write_and_prune_file(path: &str, content: &str, max_lines: usize) -> std::io::Result<()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wei-log v0.2.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `write_and_prune_file` is never used
[INFO] [stdout]    --> src/lib.rs:113:4
[INFO] [stdout]     |
[INFO] [stdout] 113 | fn write_and_prune_file(path: &str, content: &str, max_lines: usize) -> std::io::Result<()> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "bf7cf34b70dacffaa8940a027bdc6f776da0c6e26cb57d7f0f2ce8efd5075046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf7cf34b70dacffaa8940a027bdc6f776da0c6e26cb57d7f0f2ce8efd5075046", kill_on_drop: false }`
[INFO] [stdout] bf7cf34b70dacffaa8940a027bdc6f776da0c6e26cb57d7f0f2ce8efd5075046
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 173c755dc48649f236d6badb003901a1be2e7a0a76f7d60991fee81958c96895
[INFO] running `Command { std: "docker" "start" "-a" "173c755dc48649f236d6badb003901a1be2e7a0a76f7d60991fee81958c96895", kill_on_drop: false }`
[INFO] [stderr] warning: function `write_and_prune_file` is never used
[INFO] [stdout] 
[INFO] [stderr]    --> src/lib.rs:113:4
[INFO] [stdout] running 0 tests
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 113 | fn write_and_prune_file(path: &str, content: &str, max_lines: usize) -> std::io::Result<()> {
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `wei-log` (lib) generated 1 warning
[INFO] [stderr] warning: `wei-log` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wei_log-7c5a4e84fc71ddd0)
[INFO] [stderr]    Doc-tests wei_log
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "173c755dc48649f236d6badb003901a1be2e7a0a76f7d60991fee81958c96895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "173c755dc48649f236d6badb003901a1be2e7a0a76f7d60991fee81958c96895", kill_on_drop: false }`
[INFO] [stdout] 173c755dc48649f236d6badb003901a1be2e7a0a76f7d60991fee81958c96895